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A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. The ball leaves the club at a speed of 16.2 m/s at an angle of 31.0? above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands? Please show your work.
Abolt comes loose from underneath an elevator that is moving upward at a speed of 6.1 m/s. what is the speed of the bolt when it hits the bottom of the shaft
An ideal gas is confined to a cylinder by a piston. The piston is slowly pushed so that the gas temperature remains at 20 degrees C. find the entropy change of the gas
Atoms in a solid are in continuous vibrational motion due to thermal energy. find the approximate period of oscillation of a typical atom
A lazy Susan consists of a heavy plastic disk mounted on africtionless bearing resting on a vertical shaft through itscenter. The cylinder has a radius R = 10 cm and mass M = 0.23 kg. A cockroach (mass m = 0.015 kg) ison the lazy Susan, at a dista..
A child is twirling a 0.0120 kg ball on a string in ahorizontal circle whose radius is 0.100 m. The ball travelsonce around the circule in 0.500 s. determine the centripetal force acting on the ball
What is the physics behind everyday sayings
a boat is traveling upstream at 19 kmh with respect to the water of a river. the water is flowing at 7.0 kmh with
A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end ..
when 105 mL of water at 22 C is mixed with 68mL of water at 95 C, what is the final temperature? suppose no heat is lost to the surroundings and density of water is 1 g/mL.
Nitrogen gas is introduced into a large deflated plastic bag. No gas is allowed to escape, but as more and more nitrogen is added, the bag inflates to accommodate it. The pressure of the gas within the bag remains at 1 \rm atm and its temperature rem..
An air puck of mass 0.20 kg is tied to a string and allowed to revolve in a circle of radius 0.9 m on a frictionless horizontal table. What is the speed of the puck
The nucleus 60Co decays by the emission of an electron ( B 2). (Energetic gamma rays also accompany this decay and are used for the treatment of cancer.) What is the resulting nucleus
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