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You are trying to tilt a very tall refrigerator (2.0 m high, 1.0 m deep, 1.4 m wide, and 140 kg) so that your friend can put a blanket underneath to slide it out of the kitchen. Determine the force that you need to exert on the front of the refrigerator at the start of its tipping. You push horizontally 1.5 m above the floor.
light from a laser beam with a wavelength of 530 nm passes through a narrow single slit and observed on a screen 1.0 m
The radius of the planet Saturn is 5.85x10 meters to the 7th power, and its mass is 5.68x10 kg to the 26th power. Find the density of Saturn
question1suppose that for some process the cross section for absorption of a certain wavelength photon is 10-16 cm2 and
a diffraction grating with 210 lines per mm is used in an experiment to study the visible spectrum of a gas discharge
A helium gas cylinder has a pressure of 28 atm. What fraction of the original amount of helium remains in the cylinder
A 0.1 Kg hockey puck slows down from 45 m/s to 44 m/s due to friction as it slides 25m across the ice. a) Draw a free body diagram showing all the forces on the puck b)using the work-energy relationship, find the work done by the frictional force.
A 65.0 kg bungee jumper steps off abridge with a light bungee cord tied to her and to the bridge. Theunstretched length of the cord is 11.0m. She reaches the bottom of her motion 36.0 m below the bridge before bouncing back.
A box of bananas weighinh 40 N rests on a horizontal surface. The coefficient of static friction between the box, the magnitude of the frictional force is
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
At what angle are the photons scattered such that the electron’s velocity is 1% of the speed of light when the incoming light has wavelength λ = 0.05nm? For the same incoming photons, what is the photon scattering angle such that the electrons hav..
At the factory, a noon whistle is sounding with the frequency of 464 Hz. As a car travelling at 76 km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..
In this problem take right as positive and up as positive (regular coordinate system). A rocket ship has anx-acceleration of 40.0 m/s/s left. It has a y-acceleration of20.0 m/s/s up. The starting velocity of the rocket is v= +100.0i + 0.0j. (Here i =..
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