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A running back with a mass of 84 kg and a speed of 6 m/s collides with, and is held by, a 126-kg defensive tackle going in the opposite direction. How fast must the tackle be going before the collision for their speed afterward to be zero?
A 400-Ton train runs south at the speed of 60 Km/h at a latitude of 60 north. What is the horizontal force on the tracks?
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. The aluminum is 3 mm thick.
The pressure of a helium gas cylinder is 29.7 atm. After several balloons have been blown up the pressure is decreased to 5.68 atm. Obtain what fraction of the original gas remains
How does one find the volume fraction of a block that is submerged in both water and oil (oil on top and both water and oil below)
Fourteen minutes later, the count rate is 1,700 counts per minute. What is the half-life of the radioisotope?
a physicist has developed a device that generates a beam of alpha particles each of which is a helium nucleus
A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 13.9 rad/s. Find the student's final angular velocity
A 145 gram baseball is dropped from a tree 11.0 meter above the ground. Compute with what speed would it hit the ground if air resistance could be ignored
a mass of 20 kg is attached to a spring whose spring constant is 2000 nm. the mass is displaced and released. the mass
Jake keeps only 5.5 days-of-supply of inventory on average because much of his inventory is live bait and micro-brew beer, both of which have a short shelf life. What is his annual inventory turns? (Round your answer to two decimal places)
A diverging lens with a focal length of -14 cm is placed 16 cm to the right of a converging lens with a focal length of 19 cm . An object is placed 33 cm to the left of the converging lens.
A trough is 10 meters long, 3 meters wide, and 1 meters deep. Find the amount of work in joules required to empty the trough by pumping the water over the top
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