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A ball of mass 5.0 kg is lifted off the floor a distance of 1.7 m.
1. What is the change in the gravitational potential energy of the ball?
2. Now you release the ball from rest, and it falls to the floor. What is the kinetic energy of the ball just before it hits the floor?
3. What is the velocity of ball just before it hits the floor?
a pitcher throws a horizontal fastball with a velocity of 34 m/s to the left. The batter hits the baseball horizontally to the right with a speed of 52 m/s. How much work is done on the baseball by the bat
A metal slug is dropped from a height of 1/20 RM above the moon's surface. Find the speed with which the slug strikes the moon's surface
Calculate each of the following if the electrons exit the field with a speed of 4.45x10^6 m/s and distance between the plates is 2.07 cm.
A ferryboat transports tourists among three islands. It sails from the first island to the second island, 5.78 km away, Calculate the distance between the first and third islands
Find the electric energy density between the plates of a 225- parallel-plate capacitor. The potential difference between the plates is 360
A wheel with radius 43.9 cm rotates 4.27 times every second. What is the tangential speed of a wad of chewing gum stuck to the rim of the wheel
A magnifying glass uses a converging lens with a focal length of 15.5 cm. It produces a virtual and upright image that is 3.3 times larger than the object. How far is the object from the lens
Sewage at a certain pumping station is raised vertically by 5.43 m at the rate of 1 860 000 liters each day. The sewage, of density 1 050 kg/m3, Find the output mechanical power of the lift station
A certain satellite travels in an approximately circular orbit of radius 9.1 × 106 m with a period of 8 h 39 min. Calculate the mass of its planet from this information.
She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Examine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes.
Mike throws a ball upward & toward the east at a 10.0 angle with a speed of 57.0 m/s. find the ball's initial angle in Nancy's referance frame
A park merry-go-round consists of a 210 kg circular wooden platform 3.90 m in diameter. Four children running alongside push tangentially along the platform's circumference until, starting from rest, the merry-go-round reaches a steady speed of on..
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