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Here is the situation. Mass 1 rolls over the surface with no friction but mass 2 does slide with friction. Mass 1 is 3 kg. Mass 2 has a coefficient of kinetic friction is 0.30 with the surface. Mass 3 is 4 kg. When released from rest, mass 3 falls 9 meter in 3 seconds. Use g = 10 m/s/s.
1. How many Newton's second law equations can you write for this problem?
2. How many forces are on mass 1?
3. What is the mass of mass 2?
4. What is the normal force between masses 1 and 2?
A photon whose energy is 2.6 Ã- 10âˆ'14 J is scattered off an electron at an angle of 56â. What is the wavelength of the scattered wave
Assume a dog's brain is twice as great in diameter as a cat's, but each animal's brain cells are the same size and their brains are the same shape. how many times more brain cells does a dog have than a cat
A 3.20 kg block of wood sits on a table. A 2.50 g bullet, fired horizontally at a speed of 600 m/s, goes completely through the block, emerging at the speed of 180m/s. What is the speed of the block immediately after the bullet exits.
A hockey player makes a shot, exerting a constant force of 30 newtons on the puck for 0.16 seconds. With what speed does it head toward the goal?
a 1.50 kg snowball is fired from a cliff 13.0 m high. the snowballs initial velocity of 14.0 ms directed 41.0deg above
A steel wire of length 1.92m with circular cross section must stretch no more than 0.210cm, What minimum diameter is required for the wire
One can consider a set up using floating mirrors in interferometers, but they are supposed to work even though the collisions with photons should affect the mirrors. If the "which way" information is recorded by the mirrors, then how come the inte..
A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 370N. What is the final speed of the crate
Two capacitors, with capacitances of 4.40 µF and 6.00 µF are connected in parallel across a 660 Volt supply line. Calculate the charge on the 6.00 µF capacitor
Find one light and one heavy book. Put one of them at the edge of the table and use one hand to gently push it over the edge. Catch it with the other hand about 1 ft=30 cm below the edge of the table. Then do the same with the other book. (Don't choo..
To examine a particular blood sample in biology lab, a scholar uses a compound microscope set to have a magnification of -4525. Find the distance between blood sample and objective lens
Your car has stalled and you need to push it. You notice as the car gets going that you need less and less force to keep it going. How much work does the force of gravity do on the ball
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