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At the surface of the Earth, the Sun delivers an estimated 1.43 kW/m2 of energy. Suppose sunlight hits a 16.3 m by 33.3 m roof at an angle of 90.0°.
a) Estimate the total power incident on the roof.
b) Find the radiation pressure on the roof. (Assume the roof is black and totally absorbs the sunlight!)
A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of curvature of 12cm for the 1st surface, What is the focal length of this lens when used in air
A bumper car with mass m1 = 102 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 90 kg is moving to the left with a velocity of v2 = -3.3 m/s, What is the velocity of the center of mass of the system
A certain waffle iron is rated at 0.95 kW when connected to a 120-V source. What current does the waffle iron carry
A parallel plate capacitor has a charge of 2.66 X 10^-11 C after being charged by a 15.0 V battery. The plates are seperated by 2.00 mm of air
A 1.8-m-long steel wire in a musical instrument has a radius of 0.02 mm. When the wire is under a tension of 88 N, how much does its length change
An arrow is shot into the air from a 5 foot platform with an initial velocity of 80 ft per second. What does the arrow reach maximum height
A plank 2.00 cm thick and 16.6 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. estimate the shear modulus of the wood
Two metal conductors that are separated by a distance of 0.89 mm. When an electric spark jumps between them, What is the magnitude of the potential difference
A 528 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 3.2 meters
A flight attendant pulls her 70.10 N flight bag a distance of 258 m along a level airport floor at a constant speed. The force she exerts is 36.30 N at an angle of 52.0° above the horizontal.
A sample of helium behaves as an ideal gas as it is heated atconstant pressure from 273 K to 343 K. what is the mass of helium present
What is this value? In this state, the interference pattern still appears showing that each individual electron can interfere with itself.
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