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Suppose a 67.5-kg gymnast climbs a rope.
(a) What is the tension in the rope if he climbs at a constant speed?
(b) What is the tension in the rope if he accelerates upward at a rate of 1.35 m/s2?
A rifle is fired horizontally. The buillet is found to havetraveled 200 meters. at what speed must the bullethave been traveling as it left the barrel
Assuming the ball launched at a speed of 25.0 m/s (his swing was slow due to the bulky space suit) and an angle of 40.0o above the horizon, how far away did the ball land?
A cylinder of mass 14.0 kg rolls without slipping on a horizontal surface. find the rotational kinetic energy about its center of mass
Two kids decide to race from one end of a 20 meter long moving sidewalk to the other and back. Phillip runs on the sidewalk at 2.0 meters/sec (relative to the sidewalk). Who wins the race
A dragster starts from rest and accelerates down a track. Each tire has a radius of 0.320 m and rolls without slipping. determine the linear speed of the dragster
find the equivalent capacitance of a 3.90 microf capacitor and an 10.50 microf capacitor when they are connected as
suppose a carnot refrigerator is used to cool the interior of a food storage locker from room temperature to 5degc. as
According to the shop manual, when drilling a 11.8mm--diameter hole in wood, plastic, or aluminum, a drill should have a speed of 1400 rev/min. Find the maximum radial acceleration of any part of the bit
A 873 kg dragster, starting from rest, attains a speedof 26.3 m/s in 0.59 s. find the average accerleration of the dragster during thistime interval
any two conductors can be considered to be a capacitor. suppose one conductor is a sphere of radius a and the other is
A child pushes a 5 kilogram machine along a horizontal floor with a force, P, which makes an angle, theta=30o below the horizontal. find the acceleration of the machine while in motion
A common neutron source uses alpha particles striking beryllium, causing the reaction 4He+9Be -> 12C+1n. find the total kinetic energy of the reaction products
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