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In 1960 a Tampa, Florida, mother reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 Newton (about 1/4 of the car's weight) by 5 centimeter, determine how much work did her force do on the car?
question1a 93 kg lumberjack stands at one end of a 379 kg floating log. both the log and the lumberjack are at rest
A 3 kg block moves down a hill that makes a 40° angle with the horizontal direction, what is the magnitude of the acceleration of the block
A train travels due south at 60 m/s. It reverses its direction and travels due north at 60 m/s. What is the change in velocity of the train
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
Pendulum bob A has half the mass of pendulum bob B. Each bob is tied to a string that is 5.1 meters long, How high do the bobs rise after the collision
q1. a block with a mass of 20 g is pulled at a constant speed across a horizontal tabletop with a spring scale. the
Calculate the energy in of a photon of radiation. A projectile is fired straight upward at 141 m/s. How fast is it moving at the the top of its trajectory? assume it is launched upward at 45 degrees about the horizontal plane. How fast is it moving..
When you lift a bowling ball with a force of 80.2 N, the ball accelerates upward with an acceleration a. Calculate the weight of the bowling ball
Two very small spheres are initially neutral and separated by a distance of 0.66 m. What is the magnitude of the electrostatic force that acts on each sphere
If the car is moving at 30 m/s at the bottom of the dip, its mass is 800 kg, and the radius of curvature for the dip is 20 m, what is the normal force acting on the car in the dip
A certain gyroscope consists of a uniform disk with a 48 cm radius mounted at the center of an axle that is 12 cm long, what is the precession rate
the rms current in a copy machine is 7.27 a and the resistance of the machine is 16.6?. what are a the average power
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