You own a high speed digital camera that can take a picture every 0.5 seconds. You decide to take a picture every 0.5 seconds of your physics teacher as she drops a watermelon off the top of the school. After you develop and analyze the pictures, you realize that the distance the watermelon falls from the teacher in each new picture isA) the same in each picture.
B) gradually less in each picture.
C) gradually more in each picture.
D) proportional to the mass of the watermelon.
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-- There is no need to develop the pictures. They are available immediately in a digital camera.
-- There is no change in the teacher from one picture to the next.
-- The distance the watermelon falls from the teacher in each new picture is more in each picture than in the picture before it. (C)
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a truck travels up a hill with a 13.0 ◦ incline. the truck has a constant speed of 21.0 m/s. what is the horizontal component of the truck’s velocity?
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Answer:
While we jump on the diving board then the force is applied by us in the downward direction on the diving board
due to this action force applied by us the diving board goes downwards while due to the reaction force of that diving board we will experience a force in opposite direction
that reaction force will be equal in the magnitude of the force applied by us on the diving board and it is opposite in the direction
so here we will move upwards and lift off the diving board
so this is a great example of newton's III law as per this law every action has equal and opposite reaction force
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when going in reverse it makes a tiny gap between each boxcar, then when going forward it pushes or pulls each car one at a time to build momentum rather than moving them all at once...not sure
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The exchange particles you are talking about are probably the gauge bosons. They are elementary bosons, meaning that they are elementary particles making part of the standard model and they have integer spin. There are four of them: The photon, the gluon, the W+ and W- bosons and the Z boson. The photon basically is the particle of light being an excitation, if you will, of the electromagnetic field so that is mediates the electromagnetic force. The only thing that differs from long range photons (light) is that they are what is called virtual photons but that is for another subject. Then you have the gluons that come in 8 varieties and their role is to interchange the color charge in between quarks so that it mediates the strong nuclear force, the force that keeps quarks bounded into protons. And then finally there are the W+, W- and Z bosons that mediates this time, the weak nulear force, the force that allows protons to coexist in the nucleus of atoms with neutrons. I hope that helped you, but as i usually do, i tried to simplify my answer beacause i could have written a lot mor about that!
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You don't need it to solve the problem. The answer would be the same
if the blow drier were operating from a 440-V outlet, or any other kind
(just as long as the blow drier is designed to operate on whatever voltage
it was plugged into.)
Power = 750-W = 0.75 kW
Time = 13 minutes = 13/60 of an hour
Energy = (power) x (time) = (0.75 kW) x (13/60 of an hour) = 0.1625 kWh
Cost per unit of energy = $ 0.1 per kWh
Total cost = (energy) x (cost per unit of energy)
Total cost = (0.1625 kWh) x ($ 0.1 per kWh) = $ 0.01625 = 1.625 cents
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The other answer has his significant figures correct, but shows what happens
when you don't carry your units all the way through.
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Answer:
True
Explanation:
Radiative forcing is indeed the measure of the change in thermal energy units (watts per square meter) at the Earth's surface or in the atmosphere caused by a particular factor, such as an increase in greenhouse gases or aerosols. It quantifies the impact of various factors on the Earth's energy balance and is an important concept in climate science for understanding the drivers of climate change.
A. accelerate toward the more massive object.
B. accelerate away from the more massive object.
C. move toward the more massive object at a constant speed.
D. move away from the more massive object at a constant speed.
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idk why jer.k is a swear
Gravitational forces always appear in equal and opposite pairs.
When a small object is placed in a position near a more massive
object, there is a gravitational force on each object, attracting it
and drawing it toward the other one.
The force on the small object causes it to accelerate toward
the more massive one. The force on the more massive object
causes it to accelerate toward the smaller one.
The forces are equal. But since acceleration is inversely
proportional to mass, the small object heads toward the
more massive one with greater acceleration, and the more
massive object heads toward the smaller one with smaller
acceleration.
When you jump into the pool from the high diving board,
you accelerate toward the Earth, and the Earth accelerates
toward you. The gravitational forces between you and the
Earth are equal in both directions. But the Earth has more
mass than you have, so its acceleration toward you is smaller
than your acceleration toward it.