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In 1971 astronaut Alan Shepard took a golf club to the Moon, where the acceleration due togravity is about g/6. If he struck a ball with the a speed and launch angle that would result ina maximum 120m horizontal range on Earth, how far would it go?
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
Compute the mass of a ball and speed of a puck after collision.
A 6 kg block, starting from rest, slides down a frictionless incline of length 2 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block 0.5 vf.
What is weight of the parachutist
Calculate the rotational inertia of a meter stick, with mass 0.64 kg, about an axis perpendicular to the stick and located at the 18 cm mark
A projectile is fired at an upward angle of 45° from the top of a 308m cliff with a speed of 198 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
Throughout a nuclear reactor accident, 570 m3 of water at 20o C is pumped into the reactor core which is producing heat at the rate of 250 MW. If the water is allowed to boil at normal atmospheric pressure how long would it take to boil away all this..
A spherical 3-mi diameter comet impacts the earth with a velocity of 20 mi/s. Calculate the amount of heat released from the impact site
Identical point charges of +3.6 C are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty corners to change signs without changing magnitudes.
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