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Physics Momentum HW Question

I dont necessarily need the answer to this, but I need someone to show me how to do this homework problem. I know it has something to do with inelastic and elastic momentum, but the only equations I k

Doppler Effect Help please, I dont think I'm right

Consider the diagram below of a very fast car with its horn blowing. An observer at A hears an apparent frequency of 474 Hz, whereas an observer at R hears an apparent frequency of 338 Hz. The air tem

A car can accelerate from rest to a speed of 120 mph in 1/4 mile. How many seconds does this take

Please show how you get the answer!-Initial speed Vo = 0 Final speed = V=120 mph. Distance = S = 1/4 mile.V=Vo+at 120 = 0 + atat=120---(1)S = Vo.t+½a.t² 1/4= 0 +½at²(2) Substitute (1) into (2)1/4=½,.1

If i'm on a boat and I send a sound wave to the bottom and I receive it six seconds latter how deep is the H2O

Time= 6 sec Velocity= 4800 f/s I just take half the time and multiply it by the velocity, Right?-Right.Good job.

Do escape velocities of black holes increase as it's mass increases

Just wondering.It would seem logical that it would, but would that not mean the light will be traveling faster and faster than the speed of light? If that happens does light start aging backwards?-no

Calculate iinf/i0, the ratio of the two currents.

After having been in the open position for a very long time, the switch S in the following circuit is closed (t=0). The current through the battery immediately after the switch is closed is i0(t=0) an

If we can't ever really "touch" anything...

...since the electrons in our hands repulse from the object were touching, then how do we get wet?-The molecules of water would stick just above your skin but I have a feeling it has to do with the sa

A scuba tank is filled with air to a pressure of 231 atm when the air temperature is 30 degrees C

A diver then jumps into the ocean and, after a short time treading water on the ocean surface, checks the tanks pressure and finds that it is only 221 atm. Assuming the diver has inhaled a negligible

A car going 88 ft/s skids (uniform acceleration) to a stop in 3 seconds. The length of the skid mark in feet i

A car going 88 ft/s skids (uniform acceleration) to a stop in 3 seconds. The length of the skid mark in feet is?-88FPS --> 0 over 3 Sec. Avg. V = 44FPS 44 x 3 = 132

A ball is thrown vertically straight upward with a speed of 48 ft/s. how long is it in the air

A ball is thrown vertically straight upward with a speed of 48 ft/s. how long is it in the air? Also how high will the ball be?-As the ball ascends, its velocity decreases, since its against the pull

Nuclear Stability: Proton/Neutron ratio

We know that the proton/neutron ration must be in a certain range for the atom to be stable.If you add too many protons, they repel each other & you get instability. Now say you add too many neutrons.

If you carved a hollow sphere roughly the size of a small house at the very center of the earth could you walk

all of the way around the edge of the sphere without falling down? Please explain the reason for your answer. thanks, Fergus-skipping heat and pressure. Yes, there would be a very small gravity, pul

What would happen in this time machine scenario

I clone myself in the present.Im a male, 18 years old. I build a time machine.I send my young clone of 1year old to the past, lets say 30 years in the past.He falls in love with my mother and marries

What is the definition of Light Wave

What is the definition of a light wave?-A disturbance of the electric and magnetic fields of space that transfers energy, and that when absorbed by the human eye, it provides information for the sense

What is the difference between General Physics and Physics

I was going to register for a science class but found out that theres General Physics and just Physics. Whats the difference between the two? Which class is more challenging?-Im not familiar with UR s
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