Answer: see the explanation
Explanation:
The total amount of energy contained in an object is called its energy. Energy can exist in different forms, such as kinetic energy (energy of motion), potential energy (stored energy), thermal energy (heat), chemical energy (energy stored in chemical bonds), and many others.
To calculate the total energy of an object, you need to consider the different forms of energy it possesses. For example, if an object is moving, it has kinetic energy, which depends on its mass and velocity. The equation to calculate kinetic energy is KE = 0.5 * mass * velocity^2, where KE represents kinetic energy, mass is the object's mass, and velocity is its speed.
If an object is at a certain height above the ground, it has gravitational potential energy. The equation for gravitational potential energy is PE = mass * gravity * height, where PE represents potential energy, mass is the object's mass, gravity is the acceleration due to gravity (approximately 9.8 m/s^2 on Earth), and height is the object's height above a reference point.
Additionally, an object can have other forms of energy, such as thermal energy due to its temperature, chemical energy stored in its chemical bonds, or electrical energy if it has an electric charge.
It's important to note that the total energy of an object is the sum of all the different forms of energy it possesses. Each form of energy can be converted into another form, but the total energy remains constant, as stated by the law of conservation of energy.
In summary, the total amount of energy contained in an object is the sum of its different forms of energy, such as kinetic energy, potential energy, thermal energy, chemical energy, and others. To calculate the total energy, you need to consider the specific forms of energy present and use the appropriate equations. The law of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another.
can u tell in a very easy where a small child can also understand
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AI-generated answer
The total amount of energy in an object is all the different kinds of energy that it has. Energy is what makes things happen and allows them to do work. It can come in different forms, like when you're running and have energy to move, or when you have a ball that can bounce and roll.
Imagine you have a toy car that you wind up. When you wind it up, you're putting energy into it. That energy gets stored inside the car. When you let go of the car, it starts moving and uses up that stored energy. This is an example of kinetic energy, which is the energy of motion.
Another kind of energy is potential energy. Let's say you have a ball on top of a hill. The ball has potential energy because it can roll down the hill. When you let the ball go, it starts rolling and its potential energy turns into kinetic energy as it moves.
Objects can also have thermal energy, which is heat energy. When you touch something hot, like a stove, you feel the thermal energy transferring to your hand.
Some objects have chemical energy stored inside them. For example, when you eat food, your body breaks it down and turns it into energy that you can use.
These are just a few examples of the different forms of energy. The total energy of an object is the sum of all the different kinds of energy it has. Energy can change from one form to another, but it cannot be created or destroyed.
So, to put it simply, the total energy of an object is all the different types of energy it has, like the energy of motion, heat, stored energy, and more
Covert 60 mph to SI mks units
Answer:
26.8224
Explanation:
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Gamma radiation:
А
)
causes you to turn green when angry
B
travels at the speed of light
c) is easily stopped by paper
D
is a particle
Answer:
Is a particle
Explanation:
Gamma Ray is a particle and can be stopped with a very thick concrete and iron mixture.
Answer: Is a particle
Explanation:
Took a quiz!
Convert 53.9 mi/h to m/s. 1 mi = 1609 m
Answer:
it would be 86725.1 m
Explanation:
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Answer: 53.9ml/hr = 24.1m/s
Explanation:
Since 1ml = 1609m
And 1hr = 3600sec
53.9ml/hr = 53.9*1609/3600
= 24.1m/s
When a beam of light passes from substance 1 (index of refraction = 1.55) to substance 2, it has an angle of incidence of 39 ∘
and an angle of refraction of 24∘ What’s the index of refraction of substance 2? For those who’ll attempt the problem, Snells law should be used.k
Answer:
2.40
Explanation:
Snell's law states:
n₁ sin θ₁ = n₂ sin θ₂
where n₁ and n₂ are the indexes of refraction, θ₁ is the angle of incidence (relative to the normal), and θ₂ is the angle of refraction (relative to the normal).
1.55 sin 39° = n sin 24°
n = 2.40
Explain using words or visuals how minerals originally found in magma could travel
through the rock cycle and eventually end up in each of the three main classifications
of rocks. Describe what patterns must occur for each rock type to change into another.
Include any surface and sub-surface events that can be a contributing factor to the
rock cycle. SC.7.E.6.2
Answer:
Explanation:
Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases. When magma is ejected by a volcano or other vent, the material is called lava. Magma that has cooled into a solid is called igneous rock. Magma is extremely hot—between 700° and 1,300° Celsius (1,292° and 2,372° Fahrenheit). This heat makes magma a very fluid and dynamic substance, able to create new landforms and engage physical and chemical transformations in a variety of different environments. How Magma Forms Earth is divided into three general layers. The core is the superheated center, the mantle is the thick, middle layer, and the crust is the top layer on which we live. Magma originates in the lower part of the Earth’s crust and in the upper portion of the mantle.
Molted magma comes outside Earth's surface and formed igneous rocks. Due to natural decay, this igneous rocks forms sedimentary rocks and due to changes of temperature, pressure and chemical changes both of the rocks transforms into metamorphic rocks.
What is rock cycle?A fundamental idea in geology, the rock cycle illustrates how the three primary types of rocks—sedimentary, metamorphic, and igneous—change over the course of geologic time.
When a rock is pushed out of its equilibrium circumstances, it changes. For instance, an igneous rock like basalt may disintegrate and evaporate when exposed to air or melt when it is subducted beneath a continent.
Rocks do not stay in an equilibrium state; rather, they change as they interact with new environments because of the driving forces of the rock cycle, plate tectonics, and the water cycle.
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Which of the following statements best describes how waves interact with the media in which they move?
A. Only the energy travels with the wave, not the medium itself.
B. Both energy and the medium itself travel with the wave.
C. Only the medium travels with the wave; the energy remains static.
D. Neither the medium nor the energy travels with the wave.
Answer:
d
Explanation:
Neither the medium nor the energy travels with the wave.
How does the wave interact with the medium via which it travels?the speed of a wave relies upon the uses of the medium via which it travels.for instance, sound travels an awful lot faster through water than via air. whilst a wave enters a perspective a medium thru which its pace might be slower, the wave is bent in the direction of the perpendicular.Waves carry electricity via area or a medium without transporting be counted number.even as all waves can transmit electricity through a medium, wonderful waves also can transmit strength thru space. A medium is a cloth through which waves can tour.A wave is a disturbance in a medium that includes power with out a internet motion of particles. it could take the shape of elastic deformation, a version of stress, electric or magnetic depth, electric powered potential, or temperature.
wave, propagation of disturbances from region to location in a regular and organized way. most acquainted are floor waves that tour on water, however sound, light, and the movement of subatomic debris all exhibit wavelike homes.
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distinguishing sound and electromagnetic waves
Electromagnetic waves are not mechanical and transverse in nature, while
Sound waves are mechanical and longitudinal
Explanation:
In physics, waves are classified into two types:
Mechanical waves are those where the vibration is produced by the vibrations of the particles in a medium, therefore they need a medium to propagateElectromagnetic waves are those produced by the oscillations of electric and magnetic fields; they do not a medium to propagate, since they can travel through a vacuumMoreover, depending on the direction of the vibration, waves are further classified into:
Transverse waves: those where the direction of the vibration is perpendicular to the direction of propagation of the waveLongitudinal waves: those where the direction of the vibration is parallel to the direction of propagation of the waveElectromagnetic waves are not mechanical and transverse in nature (the oscillations of the electric and magnetic fields occur in a plane perpendicular to the direction of the wave), while
Sound waves are mechanical and longitudinal (the vibrations of the particles of the medium is back-and-forth along the direction of propagation of the wave)
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prove: st = ut+½ at²
Explanation:
Let the distance covered by the body be s, initial and final velocities be u and v respectively and time taken be t.
[tex] \therefore Average\: velocity = \frac{u+v}{2} \\\\ Now, \:we \:know\: that\\\\ Distance \:covered\\ = Average\: velocity \times time\\\\ \therefore s= \frac{(u+v) }{2} \times t..... (1)\\\\[/tex]
By first equation of motion:
[tex] v = u + at[/tex]
Substituting the value of v in equation (1), we find:
[tex] s= \frac{(u+u + at)}{2} \times t\\\\ \therefore s= \frac{(2u + at)}{2} \times t\\\\ \therefore s= \frac{(2ut + at^2)}{2}\\\\ \therefore s= \frac{2ut} {2}+ \frac{at^2}{2}\\\\ \huge \orange {\boxed {\therefore s= ut+ \frac{1}{2}at^2}} \\\\[/tex]
Hence proved.
Before colliding , the momentum of Block A is +450 kg^ * m/s , and Block Bis -150 kg^ * m/s . After , Block A has a momentum +100 kg*m/s. What is the momentum of Block B afterwards ?
Answer:
Momentum of Block B after collision is 200 kg.m/s
Explanation:
Momentum of block A before collision is [tex]p_{1A} = 450kg.m/s[/tex]
Momentum of block B before collision is [tex]p_{1B} = -150kg.m/s[/tex]
Momentum of block A after collision is [tex]p_{2A} = 100kg.m/s[/tex]
According to conservation of momentum, total momentum before collision is equal to total momentum after collision
[tex]p_{1A}+p_{1B}=p_{2A}+p_{2B}\\450-150=100+p_{2B}\\p_{2B}=300-100\\p_{2B}=200 kg.m/s[/tex]
Momentum of Block B afterwards is 200 kg.m/s
Answer:
200
Explanation:
Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a physical change when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled
Boiling water causes molecular movement to increase without breaking H₂O bonds. It's a physical change where molecules move farther apart as steam forms. Cooling steam back into water is reversible, showcasing the unique properties of water's hydrogen bonding.
When water undergoes a physical change, such as boiling, the arrangement of the water molecules changes due to increased kinetic energy. However, the chemical composition remains the same, meaning that the hydrogen and oxygen atoms do not separate into different atoms; they stay bonded as H₂O. The molecules move farther apart, transitioning from a liquid to a gaseous state without changing their actual molecular structure. This transformation requires the input of heat energy, and it is completely reversible; if the steam (water vapor) is cooled, it will condense back into liquid water, demonstrating one of water's unique characteristics due to its ability to form and break hydrogen bonds.
During the boiling of water, the hydrogen bonds between water molecules are broken as they gain enough kinetic energy to escape into the air as steam. When water freezes, however, these molecules form a crystalline structure that is less dense than liquid water, which explains why ice floats. This phenomenon is distinctive to water and differs from most other liquids, where the solid form is denser than the liquid.
How do you calculate acceleration
Answer: acceleration is equal to the change in velocity per unit time in seconds.
a= ∆v / t = vf - vi / t
Explanation: change in velocity or ∆v can be expressed as (vf - vi)
1) An eagle accelerates from 15 m/s to 22 m/s in 4 seconds. What is the eagle's average
acceleration?
2) A roller coaster picks up speed as it rolls down its first hill. Its initial speed is 4 m/s,
and 3 seconds later at the bottom its speed is 22 m/s. What is its average acceleration?
3) A car is said to go "zero to sixty in six point seven seconds (6.7 s)". 60 mph is equal to
26.8 m/s. What is its acceleration in m/s??
4) A car is moving at a speed of 35.8 m/s. What acceleration would it have if it took 2.0 s to
come to a complete stop?
5) A car traveling at 22.4 m/s skids to a stop in 2.55 s. Determine the acceleration of the car.
6) A plane has a takeoff speed of 88.3 m/s. It reached that speed in 30.8 s. Determine the
acceleration of the plane.
7) Rocket-powered sleds are used to test the human response to acceleration. If a rocket-
powered sled is accelerated to a speed of 444 m/s in 1.83 seconds, then what is the
acceleration of the sled?
1)The average acceleration of eagle is 1.75 m/s².
2) The average acceleration of roller coaster is 6 m/s².
3)Acceleration in m/s² is 4 m/s².
4) Acceleration required to stop the car is -17.9 m/s².
5) Acceleration required to stop the car is -8.78 m/s².
6) Acceleration of the plane is 2.87 m/s².
7)Acceleration of the sled is 243 m/s².
Answer:
Explanation:
1) Average acceleration is equal to the rate of change in velocity with respect to time. Here the final and initial velocities are given as 22 m/s and 15 m/s respectively and the time is given as 4 seconds.
So, average acceleration = (Final velocity-Initial velocity)/Time
Average acceleration = (22-15)/4= 1.75 m/s².
Thus, the average acceleration of eagle is 1.75 m/s²
2) Similarly we have to use the above formula for determining the average acceleration of the roller coaster. Here the initial velocity is 4 m/s and final velocity is 22 m/s and the time taken to reach this final speed is 3 seconds.
So, average acceleration = (Final velocity-Initial velocity)/Time
Average acceleration = (22-4)/3= 6 m/s².
Thus, the average acceleration of roller coaster is 6 m/s².
3) Acceleration = 26.8/6.7=4 m/s².
Acceleration in m/s² is 4 m/s².
4) Acceleration required to stop the car = -35.8/2=-17.9 m/s².
Acceleration required to stop the car is -17.9 m/s².
5) Acceleration of the car skidding to stop = (0-22.4)/2.55=-8.78 m/s².
Acceleration required to stop the car is -8.78 m/s².
6) Acceleration of the plane= 88.3/30.8=2.87 m/s².
Acceleration of the plane is 2.87 m/s².
7) Acceleration of the sled = 444/1.83=243 m/s².
Acceleration of the sled is 243 m/s².
The eagle's average acceleration is equal to 1.75 [tex]m/s^2[/tex].
Given the following data:
Initial velocity = 15 m/s.Final velocity = 22 m/s.Time = 4 seconds.What is an acceleration?An acceleration can be defined as the rate of change of the velocity of an object with respect to time. Also, it is usually measured in meter per seconds square.
Mathematically, acceleration is given by this formula:
[tex]a = \frac{V\;-\;U}{t}[/tex]
Where:
V is the final velocity.U is the initial velocity.t is the time measured in seconds.Substituting the given parameters into the formula, we have;
[tex]a = \frac{22\;-\;15}{4}\\\\a=\frac{7}{4}[/tex]
Acceleration, a = 1.75 [tex]m/s^2[/tex].
Note: You should use the above formula to solve the other exercises.
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A bicyclist slow with a force of 3.5 x 10^2 N. if the bicyclist and bicycle have a total mass of 1.0 x 10^2 kg, what is the acceleration
Answer:
Acceleration = 3.5 [m/s^2]
Explanation:
We can solve this problem using Newton's second law, which states that the sum of forces on a body is equal to the product of the mass by the acceleration
F = 350 [N]
m = 100 [kg]
Using Newton's second law we have:
F = m*a
where:
F = force [N]
a = acceleration or desacceleration [m/s^2]
therefore:
a = 350/100
a = 3.5 [m/s^2]
Radium-228 decays by alpha decay. Part of the nuclear equation is shown
below. Fill in the blank with a number.
Ra → He+7 Rn
Answer here
SUBMIT
₈₈ Ra²²⁸ → ₂He⁴ + ₈₆Rn²²⁴
Explanation:
Radium -228 is a radio-active element. It undergoes ∝- decay which means it emits a helium particle that is composed of 2 neutrons and 2 protons. Then the radium- 228 is converted into radon-224 which is again a radio-active element contains 86 protons and 138 neutrons by emitting an ∝-particle. The other isotopes of Ra²²³, Ra²²⁴ and Ra²²⁶ occurs naturally in the chain decay of the radio-active elements Uranium and Thorium. The ∝- decay of ₈₈ Ra²²⁸ is given as,
₈₈ Ra²²⁸ → ₂He⁴ + ₈₆Rn²²⁴
What is a mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing?
Answer:
Elasticity
Explanation:
The property of a body, by virtue of which it tends to regain its
original size and shape when the applied force is removed, is
known as elasticity and the deformation caused is known
as elastic deformation.
Ductility is the mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing.
Explanation:The mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing is ductility.
Ductility is the ability of a material to undergo significant plastic deformation under tensile stress without breaking. Ductile materials, such as metals, can be stretched into thin wires or shaped into various forms without fracturing.
For example, copper and aluminum are highly ductile metals that can be easily drawn into wires and used for electrical conductivity, while brittle materials like glass or ceramic lack ductility and break easily when subjected to stress.
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how much time would it take to stop a 2.75kg ball traveling at 3.90m/s if a constant force of -5.00N is applied to it?
Answer: 2.15secs
Explanation:
Force = mass*velocity/time
F = 5N
M = 2.75kg
V = 3.90m/s
5.00 = 2.75*3.90/time
Time = 10.725/5.0 = 2.15sec
It will take approximately 2.145 seconds to stop a 2.75 kg ball traveling at 3.90 m/s with a constant force of -5.00 N.
First, we need to calculate the initial momentum of the ball using the formula:
Momentum (p) = mass (m) × velocity (v)
Given:
mass (m) = 2.75 kg and initial velocity (v) = 3.90 m/sp (momentum) = 2.75 kg × 3.90 m/s
p (momentum) = 10.725 kg·m/s
Next, we use the principle of impulse to find the time needed to stop the ball. Impulse (J) is equal to the change in momentum, and it is also equal to the applied force (F) times the time (t):
Impulse (J) = Force (F) × time (t)Since the force applied is -5.00 N (acting against the ball's motion), we rearrange the equation to solve for time:
t = J / FThe change in momentum is equal to the initial momentum (since the final momentum will be 0 when the ball stops):
J = 10.725 kg·m/sThus,
[tex]t = \frac{10.725 kg \cdot m/s}{ 5.00 N }= 2.145 s[/tex]Therefore, it will take approximately 2.145 seconds to stop the ball.
A 100 sprinter starts from rest and final velocity of 18.8m/s what is the sprinter average acceleration if takes him 10.6 s to run the 100m race
Answer: a= 1.77 m/s²
Explanation: acceleration is expressed in:
a= vf - vi / t
a= 18.8 m/s - 0 m/s / 10.6 s
a= 1.77 m/s²
Find the sum of the vectors:11 km N ,11km E
The resultant vector is 11√2 km due north east.
Explanation:The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.
We need to calculate the magnitude and direction separately.
Here firstly for the magnitude,
The magnitudes are both 11 km and they are at right angles to each other.
So, the resultant magnitude = √(11² +11²) km
=11√2 km
Now for the direction, one vector is due north and the other is due east.
So the resultant vector is due north east.
So the final vector is 11√2 km due North-East.
A skateboarder who travels 60 meters in 30 seconds has a speed of
Answer:
2m/s
Explanation:
Speed= distance / time
? = 60m / 30s
speed= 60/30
60/30=2
speed= 2m/s
what’s 3 times 10 to the 8th power divided by 2.45 times 10 to the 9th power
0.12244898 is the value obtained when solving the given.
Explanation:
Given:
3 times 10 to the 8th power can be expressed in equation format as [tex]3 \times 10^{8}[/tex] (3 times symbolizes ‘multiplication’ then it is to the tenth power of 8)
2.45 times 10 to the 9th power can be expressed in equation format as [tex]2.45 \times 10^{9}[/tex] (2.45 times symbolizes ‘multiplication’, then it is to the tenth power of 9)
Asked to find the solution when dividing the above,
[tex]\frac{3 \times 10^{8}}{2.45 \times 10^{9}}=\frac{3}{2.45} \times 10^{8-9}[/tex]
When the tenth power of any value goes from denominator to numerator and vice-versa, presents in opposite sign to that it possess (like when ‘[tex]10^{9}[/tex] ' goes to numerator changed as ' [tex]10^{-9}[/tex] ').
Now by solving the above equation, we get
[tex]\frac{3}{2.45} \times 10^{8-9}=1.22 \times 10^{-1}=\frac{1.22}{10}=0.12244898[/tex]
Three forces act on an object (at the origin of a rectangular coordinate system). Force one, F1, has a magnitude of 5.81 N and a direction Theta1 = 77.0 degrees, force two, F2, has a magnitude of 4.88 N and a direction of Theta2, = 156 degrees, and a force three F3, has a magnitude of 4.52 N and a direction of Theta 3 = 289 degrees. add these three vectors using the component method of vector addition. Call the resultant vector F and write the answer in component form (ie using unit vectors). then calculate the magnitude and direction of the vector F.
Answer:
F = -1.682 i + 3.374 j [N] ; F = 3.77[N]; α = 65.78°
Explanation:
In order to be able to understand this problem more easily, we will have to draw the vectors at the point of origin and in this way, with the help of the angles we will be able to find each of the components of the forces.
Looking at the attached image we can see each of the three forces, take each force and decompose them into the x & y axes.
F1 = 5.81 [N]
[tex]F_{1x} = 5.81*cos(77) = 1.306[N]\\F_{1y} = 5.81*sin(77) = 5.66[N][/tex]
F2= 4.88 [N]
[tex]F_{2x}= - 4.88*cos(180-156) =-4.458[N]\\F_{2y}= 4.88*sin(180-156) =1.984[N][/tex]
F3= 4.52 [N]
[tex]F_{3x} = 4.52*cos(360-289)=1.47[N]\\F_{3y} = - 4.52*sin(360-289) = -4.27[N][/tex]
Now we can sum each of the forces in the different components
[tex]F_{x} =F_{x1}+F_{x2}+F_{x3} = 1.306-4.458+1.47 = - 1.682[N]\\F_{y} =F_{y1}+F_{y2}+F_{y3} = 5.66+1.984-4.27 = 3.374[N][/tex]
F = -1.682 i + 3.374 j [N]
The total magnitude can be calculated by Pythagoras theorem
[tex]F = \sqrt{(1.682)^{2}+(3.374)^{2} } \\F = 3.77 [N][/tex]
The direction can be calculates as follows:
tan(α) = 3.374/1.682
α = 65.78°
This angle was calculated with respect to the horizontal
Find the equivalent resistance between points A and B shown in the figure(Figure 1). Consider R1 = 1.9 Ω , R2 = 2.5 Ω , R3 = 4.4 Ω , R4 = 3.5 Ω , R5 = 5.5 Ω , and R6 = 7.1 Ω .
The equivalent resistance between the point A and B is 0.95 ohm.
Explanation:
Solving for R3, R4, and R5 since they are in parallel formation. Their equivalent resistance could be
1 / R = (1 /R3) + (1 / R4) + (1 / R5)
= (1 / 4.4) + (1 / 3.5) + (1 / 5.5)
1 / R = 0.69
R = 1.43 ohm.
Next solving R6 and leg of this resistance which are in series connection,
r = R + R6
= 1.43 + 7.1)
r = 8.53 ohm.
Finally the three resistance R1, R2 and the leg resistance which are in parallel connection,
1 / r = (1 / 1.9) + (1 / 2.5) + (1 / 8.53)
= 1.04 ohm
Equivalent resistance R eq = 1 / 1.04 = 0.95 ohm.
The equivalent resistance of the circuit shown in the attachment is 0.958 Ω.
What is a resistor?The resistor can be defined as a device that has some electrical resistance and that is used in an electric circuit for protection, operation, or current control.
Given that there are 6 resistors connected in-between points A and B as shown in the attachment.
R1 = 1.9 Ω, R2 = 2.5 Ω, R3 = 4.4 Ω, R4 = 3.5 Ω, R5 = 5.5 Ω, and R6 = 7.1 Ω.
The resistors R3, R4, and R5 are in parallel connections. Let's consider that R' is the equivalent resistor of this parallel connection, then,
[tex]\dfrac {1}{R'} =\dfrac {1}{R_3} + \dfrac {1}{R_4}+\dfrac {1}{R_5}[/tex]
[tex]\dfrac {1}{R'}= \dfrac {1}{4.4}+ \dfrac {1}{3.5}+\dfrac {1}{5.5}[/tex]
[tex]\dfrac {1}{R'}= 0.69[/tex]
[tex]R' = 1.45[/tex]
The equivalent resistor is in series connection with R6. Hence, the equivalent resistance R'' is given below.
[tex]R'' = R' + R_6[/tex]
[tex]R'' = 1.45 + 7.1[/tex]
[tex]R'' = 8.55[/tex]
Now the resistors R1, R2, and R'' are in parallel connection, so the equivalent resistor R is given as,
[tex]\dfrac {1}{R} = \dfrac {1}{R_1} + \dfrac {1}{R_2} + \dfrac {1}{R''}[/tex]
[tex]\dfrac {1}{R} = \dfrac {1}{1.9} +\dfrac {1}{2.5} +\dfrac {1}{8.55}[/tex]
[tex]\dfrac {1}{R} = 1.043[/tex]
[tex]R = 0.958[/tex]
Hence we can conclude that the equivalent resistance of the circuit shown in the attachment is 0.958 Ω.
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Definition: This is what causes acceleration. Two forces acting opposite each other.
Example: Ben pushes on a heavy box. Friction opposes Ben's push. The box moves. Ben's pushing force is
greater than the friction force.
Answer:
unbalanced force
Explanation:
i just did it.
Two forces acting opposite each other then the acceleration is caused if one force is greater in magnitude than the other.
What is force?A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.
A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N). Force is represented by the symbol F (formerly P).
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the
Acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.
Hence Two forces act opposite each other then the acceleration is caused if one force is greater in magnitude than the other.
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_C7H16+ _O2 produces _CO2 +H2O
C₇H₁₆+11O₂⇒7CO₂+8H₂O
Which is an example of physical weathering?
(1 point)
acid rain breaking down compounds in
rock statues
rock breaking apart when it falls from a
cliff
oxygen interacting with minerals in rock
bits of iron in rock rusting when exposed
to oxygen and water in
Answer:
Rock breaking apart when it falls from a cliff
Rock breaking apart when it falls from a cliff is an example of physical weathering (option B)
What physical weathering?Physical weathering, also known as mechanical weathering, involves the physical breakdown of rock into smaller pieces without changing its chemical composition.
In this case, the force of gravity and the impact of the falling rock cause it to break into smaller fragments, which is a mechanical process and a common example of physical weathering. The other options involve chemical weathering processes.
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A student fires a cannonball horizontally with a speed of 39m/s from a height of
73m. Neglect drag.
What was the cannonball's initial horizontal speed?
What was the cannonball's initial vertical speed?
How long did the ball remain in the air?
How far from the base of the building will the ball land (measured along the
ground)?
Explanation:
The initial horizontal speed is 39 m/s, and the initial vertical speed is 0 m/s.
v₀ₓ = 39 m/s
v₀ᵧ = 0 m/s
In the y direction:
Δy = 73 m
v₀ᵧ = 0 m/s
aᵧ = 9.8 m/s²
Find: t
Δy = v₀ᵧ t + ½ aᵧt²
73 = 0 + ½ (9.8) t²
t = 3.9 s
In the x direction:
v₀ₓ = 39 m/s
aₓ = 0 m/s²
t = 3.9 s
Find: Δx
Δx = v₀ₓ t + ½ aₓt²
Δx = (39) (3.9) + 0
Δx = 150 m
The initial horizontal speed of the cannonball is 39 m/s, its initial vertical speed is 0 m/s, it remained in the air for approximately 3.86 seconds, and it landed about 150.3 meters from the base of the building.
Explanation:The cannonball's initial horizontal speed is the speed at which it was fired, which is 39 m/s. Since the cannonball was fired horizontally, its initial vertical speed is 0 m/s.
To find out how long the ball was in the air, we need to use the equation of motion. With the use of the formula for the time of flight for a vertically projected body (t = √(2h/g)), where h is the height from which the cannonball was dropped, and g is the acceleration due to gravity, which is 9.8 m/s², we get t = √(2*73/9.8) = 3.86 seconds.
Finally, to find the distance along the ground, we multiply the time in the air by the horizontal speed (because the horizontal velocity stays consistent in a vacuum), so we get 39 m/s * 3.86 seconds = 150.3 meters.
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object is placed 15cm in front of a plane mirror. If the mirror is moved further 5cm away from the object and the image is
Answer:
The image will most likely be 20cm in front the mirror since the mirror was placed further 5cm.
What is a conversion factor?
a derived unit with a new name
the graph of recorded data
the density of a substance
a ratio of equivalent units
Answer:
A ratio of equivalent units
Explanation:
A conversion factor is a ratio of equivalent units and depends on which units are to be converted.
For example we want to convert 275 [mm] to inches, so we have to find the right conversion factor to allow us to work that conversion.
275 [mm] = inches = ?
[tex]275 [mm] * \frac{1in}{25.4mm} = 10.82 [in][/tex]
In this case the ratio is 1/25.4 = 0.039 [in/mm]
The right-hand rule predicts which of the following?
The direction of the force on a charged object moving in a gravitational field.
The direction of the motion of a charged object moving through an electric field.
The speed of a test charge through a magnetic field.
The direction of the force on a charged object moving through a magnetic field.
Answer:
The direction of the force on a charged object moving through a magnetic field.
Explanation:
When considering the motion of a charged particle in a magnetic field, the important vectors are the magnetic field B, the velocity of the particle v, and the magnetic force exerted on the particle F. The vectors are all perpendicular to each other. As demonstrated by the right-hand rule.
The ability of atoms to attract electrons in chemical bonds is called
________.
A. swarming
B. ionization energy
C. electronegativity
D. electronic shielding
Answer:
C) Electronegativity