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In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. After the collision, the cue ball moves at 4.79 m/s, 25 degress south of east, and the second ball's speed is 3.07 m/s. At what angle (north of east) does the second ball travel? Assume each ball has a mass of 162 g.
What was the speed of the cue ball prior to the collision?
Is the kinetic energy of the colliding balls conserved, yes or no? (Ignore the rotation of the balls.)
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
If the maximum acceleration the vehicle’s brakes are capable of is −6 m/s2, illustrate what is the maximum reaction time of the motorist that will allow her or him to avoid hitting the deer?
A fireman d = 59.0 m away from a burning building directs a stream of water from a ground- level fire hose at an angle of ?i = 29.0° above the horizontal, at what speed will the water strike the building
Two 5000 kg passenger cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with the combined momentum.
A motorist travelling at 17m/s encounters a deer in the road 49m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7 m/s2. If his or her reaction time is 1.9987 s, how fast will (s) he be travelling when (s) he reaches dee..
A dipole is located at the origin, and is composed of charged particles with charge +e and -e, separated by a distance 9 10-10 m along the y axis
A box is pushed across the floor, slide with a constant velocity, and is opposed by a friction force of 25N. What is the magnitude of the force? Choose the correct answer. A.Less than 25N B.Zero C.Greater than 25N D.25n
A particular myelinated axon has nodes spaced 0.80 mm apart. find the conduction speed of a nerve impulse along this axon
A hiker is wearing wool clothing of 0.40 cm thickness to keep warm. Her skin temperature is 39° C and the outside temperature is 8.0° C. what is the rate of heat conduction through her clothing
A communications satellite with a mass of 400 is in a circular orbit about the Earth. The radius of the orbit is 2.8×10^4 as measured from the center of Earth. Compute the weight of the satellite on the surface of the earth.
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
A 1.0-cm-thick layer of water stands on a horizontal slab of glass. What is the ray's direction of travel in the glass
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