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A rock is tossed straight up with a speed of 29 m/s . When it returns, it falls into a hole 10 m deep.
A) What is the rock's velocity as it hits the bottom of the hole? Express your answer using two significant figures.
B) How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
You push on the chair with a force of = 42.0 directed at an angle of 34.0 below the horizontal and the chair slides along the floorcalculate, Illustrate what is the magnitude of the normal force that the floor exerts on the chair.
Which has a greater packing fraction, a diamond crystal structure or a copper crystal structure, how much empty space would be left in each structure
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is h. What was the direction of the mug's velocity just before it hit the floor
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
A ball of mass 1.7 kg hangs at the end of a string 1.2 m in length from the ceiling of a room. The height of the room is 4.0 m. What is the gravitational potential energy of the ball relative to the ceiling
When the starter motor on a car is engaged, there is a 330A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5m .
An airplane with a speed of 76.6 m/s is climbing upward at an angle of 49.5 ° with respect to the horizontal, Relative to the ground, determine the angle of the velocity vector of the package just before impact
Explain how Karl lifed th cement. How much time would it take for the police officer to catch the speeder, assuming that the speeder maintains a sonstant speed? How fast will the police officer be traveling at this time.
Two blocks (A and B) are in contact on a horizontal frictionless surface. A 40N constant horizontal force is applied to A. The mass of A is 5.0kg and the mass of B is 20k
When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard.
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