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A 10-kg bowling ball moving at 4.0 m/s bounces off a spring atabout the same speed that it had before bouncing. What is the change in momentum of the bowling ball?
A 50 kg bag of sand at 25 C falls 10 m onto the pavement and comes to an abrupt Stop. What is the change in internal energy in the sand
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below horizontal, what is the magnetic flux through the desk surface.
What is the maximum reaction time. A 1.52 wide, 1.50 high, 1500 car hits a very slick patch of ice while going 21.0 .If friction is neglected, how long will it take until the car's speed drops to 14.
A child is playing by jumping on a bathroom scale. The mass of the child is 31 kg and when he stands on a bathroom scale, the spring inside the scale compresses 0.46 mm. what is the maximum height the child can jump on the scale
A 0.250 kg ball attached to a string s being swung in a vertical circle, What is the minimum speed at the top of the circle to keep the string from going slack
a bus was initially traveling with a velocity of 50 kmhr east. later it was observed traveling with a velocity of 100
A 5.00 kg sack of flour is liftedvertically at a constant speed of 4.00 m/s through a height of13.0 m. How much work is done on the sack by the lifting force
As a laudably skeptical physics student, you want to test Coulomb\'s law, As expected, the predictions of Coulomb\'s law are well confirmed, What is the magnitude of the force
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm, what force is exerted by the biceps muscle
the generator at a power plant produces ac at 48000 v. a transformer step this up to 345000 v for transmission over
A vertical straight wire carrying an upward 24?Acurrent exerts an attractive force per unit length of 5.9×10?4N/m on a second parallel wire 7.5cm away
your car engine just died. your were moving rightward at 25 m/s, but your car slows to a rest in a distance of 120 m. what net average force was exerted on the car
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