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There is a a bright 10,000 W light bulb shining in all directions that is in the middle of a large room. A thin black 1 m^2 sheet absorbs all the light that falls on it and is suspended 0.5 m above the light due to the radiation pressure. What is the mass of the sheet?
A beam of quasimonochromatic light having an irradiance of 500 watts per square meter is incident in air, Determine the reflectance and transmittance
A spacecraft moving away from Earth emits a 4990 Hz signal. A scientist on Earth measures the signal to be 4989 Hz. What is the speed of the spacecraft relative to Earth
A 50.0 kg object slides down a 30o angle slope from rest at a height of 12.0 m. What is the object's speed at the bottom of the slope
15.0 meters from a sound source that radiates freely in all directions, the intensity is 0.00105 W/m2. What is the rate at which the source is emitting sound energy
A truck is traveling at 11.1 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
q1. a thin layer of magnesium fluoride n 1.38 is used to coat a flint-glass lens n 1.61. what minimum thickness must
A small rock moves in water and the force exerted on it by the water is given by equation . The terminal speed of the rock is measured and found to be 1.9 . The rock is projected upward at the initial speed of 6.4 . You can ignore the buoyancy for..
The power rating of a resistor is the maximum power it can safely dissipate without being damaged by overheating. what is the maximum current it can carry without damage
To cook a stew, you use a 4-mm thick steel pot with a bottom surface area of 100 cm2. The heating takes place from a 500oC source. Determine the heat transfer to the stew
In a ballistics test, a 25.0g bullet traveling horizontally at 1200m/s goes through a 40.0cm -thick 350kg stationary target, What average force does the bullet exert on the target
How many electrons would have to be added to one of these spheres to make it electrically neutral?
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
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