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A constant 6.0-N net force acts for 4.0 s on a 12 kg object. What is the object's change of velocity?
The position of a particle moving with constant acceleration is given by x(t) = 6t2 + 6t + 4, Calculate the average velocity of this particle between t = 6 seconds and t = 10 seconds
What focal length does the lens need. Find out the electrostatic force exerted on one sphere by the other.
Two optically flat glass plates, L = 16 cm long, are in contact at one end and separated by d = 0.020 mm at the other end. What is the number m of bright fringes which are visible
A toroid having a square cross section, 4.40 cm on a side, and an inner radius of 13.1 cm has 660 turns and carries a current of 0.801 A. What is the magnitude of the magnetic field inside the toroid
Astronauts on our moon must function with an acceleration due to gravity of 0.170g A. If an astronaut can throw a certain wrench 11.0{rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed i..
Here on Earth you hang a mass from a vertical spring and start it oscillating with amplitude 1.9 cm. How long does it take for the mass to make one round trip
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. What is the change in entropy of the boiling water
Halley's comet, which passes around the Sun every 76 years, hasan elliptical orbit. When closest to the Sun (perihelion) it is ata distance of 8.823 x 1010 m, Calculate its speed at aphelion
A loudspeaker produces a musical sound by means of the oscillation of a diaphragm whose amplitude is limited to 2.0 μm. At what frequency (in Hz) is the magnitude a of the diaphragm's acceleration equal to g?
q1. a football spends a total of 5 seconds in the air. it reaches a peak height of 30 meters. how long does it take to
A tight uniform string with a length of 1.80m is tied down at both ends and placed under a tension of 100N/m. What is the mass of the string
In exercising, a weight lifter loses 0.124 kg of water through evaporation, find the change in the internal energy of the weight lifter
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