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A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 630 N at an angle of 10° with the centerline of the canal. What is the net force on the barge?
For many years Colonel John P. Stapp, USAF, held the world's land speed record. He participated in studying whether a jet pilot could survive emergency ejection.
The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36.0km/s. The second star, Beta, What is the mass of the star Beta and alpha
The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash, Assuming that the flash lasts for 4.6 ms, find the effective power or "wattage" of the flash
n = 3.78 mol of Hydrogen gas is initially at T = 366 K temperature and pi = 2.88×105 Pa pressure. How much work did the external force perform
A 250g steel ball and a 500g steel ball each hang from 3.0-m-long strings. At rest, the balls hang side by side, barely touching. To What angle does each ball rebound
You observe that the hammer hangs at rest with respect to the bus when the angle between the rope and the ceiling of the bus is 79. Illustrate what is the acceleration of the bus?
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
A note played on a piano is 4719 Hz. If the speed of sound is 347 m/s, what is the wavelength of the note?
If the value of the linear charge density is ? = 40.5 ?C/m and the distance between the two cables is D = 40.5 m, calculate the electric field midway between the two cables
The wavelength of an ocean wave
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
A spring with an unstrained length of 0.070 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
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