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An amount of gas in a well-insulated container is compressed reversibly and adiabatically to half its initial volume. Does the entropy of the gas decrease, increase, or stay the same?
An ambulance has a siren of frequency 700 Hz. If the ambulance is moving at a speed of 60 miles per hour, what will be the frequency heard by a man standing on the sidewalk as the ambulance approaches him
A violin string has a length of 0.360 m and is tuned to concert G, with fG = 392 Hz. (a) How far from the end of the string must the violinist place her finger to play concert A, with fA = 440 Hz? cm from the bridge (b) If this position is to remain ..
q1. a football player runs directly down the field for 16 m before turning to the right at an angle of 33 from his
Three electrons are aligned on a straight line and separations between them are 1.0 mm. Outer two electrons are fixed in position. find the electric potential at the position of the center electron
green laser light shines on a double slit creating a pattern of bright and dark spots on a screen some distance away.
Every year, there is a foot race to the top of the Empire State Building. what was his average power output during the race
A bat at rest sends out ultrasonic sound waves at 50,000 Hz and receives them returned from an object moving directly away from it at 33.0 m/s. What is the received sound frequency
The gravitational force exerted on a baseball is 2.11 N down. A pitcher throws the ball horizontally with velocity 15.0 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 174 ms. The ball starts from rest.
Suppose a star with radius 8.36 108 m has a peak wavelength of 692 nm in the spectrum of its emitted radiation. What is the surface temperature of the star
an observer stands 25 m behind a marksman practicing at a rifle range. the marksman fires the rifle horizontally the
part 1 a 500g bar 0.8m across moves with a velocity 5.0 meters per second. the total resistance of the wire is 0.5
Unpoloarized light is passed through a set of n polarizers. The first polarizer is arranged with the polarizing slits aligned vertically, and the last polarizer of the set is arranged so its slits are aligned horizontally. Each polarizer in betwee..
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