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A high diver of mass 63.0 kg jumps off a board 10.0 m above the water. If her downward motion is stopped 2.30 s after she enters the water, what average force did the water exert on her?
Two astronauts, one of mass 60 kg and the other 82 kg, are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 11 m?
What is the acceleration of a vehicle that changes its velocity from 44.65 km/h to a dead stop in 1.15 s? (The unit of measure that we will use will be the km/hs.
When a 111 dB sound wave comes through an open window of area 0.510 m2, how much acoustic energy passes through the window in a 10.3 min interval
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor of 1.0
A metal conducting sphere of radius 15cm has a net charge of 30nC and is located with its center at the origin. what is the electric potential at the origin
A long jumper leaves the ground at an angle of 20.0o to the horizontal and at a speed of 11.0 m/s. What is the takeoff speed of the jumper
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
In the process of changing a flat tire, a motorist uses a hydraulicjack. She begins by applying a force of 45 N to the input piston,which has a radius r1. obtain the force that the output plunger applies to the car
small metal bead, labeled A, has a charge of 26 . It is touched to metal bead B, initially neutral, then that the two beads share the 26 charge, but not required equally. When the two beads are then placed 5.0 apart, force between them is 5.4×10-..
Two cars, each with a mass of 6000 kg, hit head on each traveling at 80 km=h. Estimate the increase in internal energy absorbed by the materials in each car.
A rocket is fired straight upp from the ground with a 2.25 m/s acceleration. what is the speed of the rocked when the engines stop
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