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In the figure, water stands at depth D = 35.0 m behind the vertical upstream face of a dam of width W = 315 m. Discover the torque due to the net horizontal force on the dam, measured regarding a rotation axis parallel to the dam and during point O. (Note: use g = 9.81 m/s2)
a vertical concrete dam is built in the ravine between two hills. The face of the dam slopes equally on both sides at an angle of 45.0o to the horizontal. Find the horizontal force on the dam just due to the water
a carnot engine with a hot-reservoir temperature of 380 degree c has the same thermal efficiency. what is the
An 80.0-kg man jumps from a height of 2.50 m onto a platformmounted on springs, What is the man's speed at the instant he depresses the platform 0.120 m
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 55.5 m/s and returns the shot with the ball traveling horizontally at 36.0 m/s in the opposite direction. What work does the racquet do on the ball
Only radiation with wavelengths smaller than 0.2424um is capable of dissociating molecular oxygen into atomic oxygen, according to the reaction: O2 + photon
A body is traveling at3.0 m/s along the positive directionof an x axis; no net force acts on the body. What is the speed of the forward part
The drawing shows a skateboarder moving at 6.78 m/s along a horizontal section of a track that is slanted upward by 51.6 ° above the horizontal at its end, find the maximum height H to which she rises above the end of the track
The spin cycles of a washing machine have two angular speeds, 450rev/min and 623rev/min . The internal diameter of the drum is 0.570m, Find the laundry's maximum tangential speed
What mass (in grams) of steam at 100°C must be mixed with 251 g of ice at its melting point, in a thermally insulated container, to create liquid water at 66.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
Your cell phone typically consumes about 440 mW of power when you text a friend. what is the current flowing through the cell-phone circuitry under these circumstances
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. What is the centripetal acceleration of the ball at 8.28 rev/s
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
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