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A piano string is so badly out of tune that the tension must be increased by 10%. Find the percentage increase of the frequency.
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 66.3° above the horizontal. By how much does the rocket clear the top of the wall
Sunlight falls on two polarizers with their polarization axes oriented 57° to one another. What fraction of the light intensity is transmitted
A skier is accelerating down a 30 degree hill at 3.60 m/s^2. How long would it take her to reach the bottom of the hill, assume she starts from rest and accelerates uniformly, if elevation change is 170m.
It takes a runner 3 h, 9 min, 4 s to run a marathon. If the distance of a marathon is 42.2 km, what is the average speed of the runner
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
The sidereal period of the Earth is 23 hours, 56 minutes, and 4.0 seconds. Determine the angular velocity of the Earth's rotation on its axis
During an adiabatic process, the temperature of 3.92 moles of a monatomic ideal gas drops from 485 oC to 205 oC. For this gas. find the net change in internal energy of the system
A person with a weight of 237 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
Car A accelerates from 0 mph to 30 mph in 6 seconds. Car B accelerates from 0 mph to 35 mph in 6.5 seconds
or a given initial projectile speed, For what other launch angle will the projectile have the same range
A laser beam is directed at the top mirror from the left edge of the bottom mirror. Elucidate what is the smallest angle of incidence with respect to the top mirror, such that the laser beam
Capacitors C1 = 5.80 µF and C2 = 2.40 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
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