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A bobsled slides down an ice track starting (at zero initial speed) from the top of a(n) 44.9 m high hill. The acceleration of gravity is 9.8 m/s2 . Neglect friction and air resistance and determine the bobsled's speed at the bottom of the hill. Answer in units of m/s
A large group of football fans comes to the game with colored cards that spell out the name of their team when held up simultaneously. Most of the cards are colored blue, find the maximum diameter (in mm) of the spectator's pupils
Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens
Pitcher throws 0.15kg baseball. What is the approximate speed of the pitch, if force exerted by pitcher is 30N
What is the maximum bandwidth of the amplifier
A car is traveling down a hill that makes an angle of 13° with the horizontal. The driver applies her brakes, evaluate the acceleration of the car
on one particular shot, his 1.00 g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop. If the muzzle velocity of the gun is 64m/s and cheese has a mass of 98 g, what is the coefficient of friction between the cheese..
A 20.0%u03BCF capacitor is charged by a 160.0-VV power supply, then disconnected from the power, Calculate the oscillation frequency of the circuit
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration of the woman
A large balloon of mass 222 kg is filled with helium gas until its volume is 335 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. Calculate the buoyant force acting on the balloon
Only two forces act on an object (mass = 2.70 kg), as in the drawing. (F = 63.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object.
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