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Starting from rest, a 98-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 825 N, and his speed at the bottom of the pole is 3.7 m/s. How far did he slide down the pole?
A certain heat engine does 8.0 kJ of work and dissipates 9.00 kJ of waste heat in a cyclical process. What was the heat input to this engine
q1. a planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. the star exerts a force
It's nighttime, and you've dropped your goggles into a swimming pool that is 4.0 mdeep. How far are the goggles from the edge of the pool
A sump pump is draining a flooded basement at the rate of 0.600 L/s, The water enters a hose with a 3.00 cm inside diameter and rises 2.50 m above the pump. What is its pressure at this point
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the centripetal force that acts on the car
A Carnot engine does work of 150 J per cycle. The engine operates between two reservoirs at 20 degree C and 500 degree C. How much energy is lost per cycle in its exhaust
An object of mass 279.948159 g executes SHM with an amplitude of 15.523567 cm and a period 26.969187 s. Find the force acting on the object at time 1.403065 s
find the coefficient of kinetic friction between the crates and the table.
1.you are holding a 6-kg dumbbell straight out at arms length. assuming your arm is 0.70 m long what torque is the
A softball pitcher throws an underhanded pitch with the arm fully extended (straight at the elbow). What force did the muscles exert to cause the arm to rotate
In what direction should the aircraft head?
An average force of 201 N is exerted to draw the string back 1.3 m. unless otherwise directed, imagine that air resistance is negligible. Illustrate energy bar graphs to solve the difficulty .
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