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A 47.0 g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 25.2 m.
(a) Neglect air resistance and determine the kinetic energy of the ball at its highest point.
(b) What is its speed when it is 9.0 m below its highest point?
A Carnot refrigerator operating between -10.0 ?Cand + 10.0 ?C extracts heat from the cold reservoir at the rate 100J/s. What is the rate at which heat is exhausted to the hot side
A box of mass m = 2.5 kg moves along a straight line through a vector displacement d = (7.0 i -3.8 j) m. What is the work done by this force as the box moves
Joey weighs 77 lb and sits on a seesaw at a distance of 30 inches from the fulcrum. Jenny weighs 67 lb and sits on the opposite side of the seesaw at a distance of 48 inches from the fulcrum. how far away from the fulcrum should he sit
A 1.0-cm diameter pipe widens to 2.0 cm and then narrows to 5.0 mm. Liquid flows through the first segment at a speed of 4.0 m/s. What is the volume flow rate through the pipe
a 120 g ball attached to a spring with spring constant 2.9 nm oscillates horizontally on a frictionless table. its
a. find the boiling temperature of a juice that is boiling at an absolute pressure of 31.19 kpa. assume that the
Bicyclists in the Tour de France do enormous amounts of work during a race. How much work does he do during a 177-km race in which his average speed is 12.7 m/s
Use the equation of the position to find the potential elastic energy in a Simple Harmonic Motion(SHM). What would you need to do to find the elastic constant of a spring
A water molecule can vibrate in various ways, but the easiest kind of vibration to excite is the "flexing" mode in which the hydrogen atoms move toward and away from each other by HO bonds do not stretch.
A uniform plank of length 4.50 m and weight 275 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 456 N walk on the overhanging part of the plank before it just be..
q1. a 260 wooden raft floats on a lake. when an 80 man stands on the raft it sinks 5.0 deeper into the water. when he
An ambulance travels down a highway at a speed of 30 m/s. Itssiren emits sound at a frequency of 400 Hz, What is the frequency heard by a passenger in the car as thecar approaches the ambulance
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