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A) Astronomers on planet Zog whose sun is 1.4 x 10^11 m away, measure their solar flux to be 1250 W/m^2. What is their sun's total energy output?
B) The astronomers on Zog find that their sun's spectrum agrees with that of a blackbody of temperture 5500 K. What is the radius of their sun?
C) Astronomers on Earth observe a radiant power of 10.6 x 10^-9 W/m^2 for the star which is the sun for planet Zog. How far away is this from Earth in m?
D) Astronomers would more likely report this distance in parsecs. How far away is it in parsecs?
A simple pendulum is made from a string that is 0.65m inlength with a mass of 0.2 kg attached to the free end. The mass is pulled to one side through a small angle and released fromrest. What s the angular frequency and period of the pendulum? if t..
Picture yourself in the castle of Helm's Deep from the Lord of the Rings. You are on top of the castle wall and are dropping rocks on assorted monsters that are 15.55 m below you. How long after you release the rock does this happen
The diameter of our disk-shaped galaxy, the Milky Way, is about 1.0 105 lightyears (ly). find the distance between the centers of the two plates
The coefficient of performance of a refrigerator is 3.4. The compressor uses 20 J of energy per cycle. How much heat energy is exhausted per cycle
A heat engine operates between two reservoirs at temperatures of 19.5oC and 313oC. What is the maximum efficiency possible for this engine
What is sign and magnitude of charge
A monatomic ideal gas ( = 1.67) is contained within a box whose volume and pressure are 3.1 m3, Find the speed of sound in the gas
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
When you walk toward a mirror you see your image approaching you. If you walk at 2 m/s, how fast do you and your image approach each other
Consider n moles of an ideal monatomic gas placed in a vertical cylinder. The top of the cylinder is closed by a piston of mass M and cross-section A. Initially the piston is fixed, and the gas has temperature T0 and volume V0.
A puck slides across a smooth, level tabletop at height H at a constant speed vo. What is the algebraic relationship between the distances x and H
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