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Fresh water is impounded behind a dam to a height h of 18 ft, as a shown.
(A) determine the maximum pressure behind the dam.
(B) determine the resultant force on a typical 1-ft-wide (18-ft-high) segment of the darn.
(C) locate the position of the resutant force with respect to the bottom of the dam.
A radioactive isotope has a half-life of 76.0 min. A sample is prepared that has an initial activity of 16.0E10 Bq. How many radioactive nuclei are initially present in the sample
an experiment measures the speed of a 250-kilogram motorcycle every 2 seconds. the motorcycle moves in a straight
The pressure at the surface of the water will be 140kPa , and the depth of the water will be 13.8m . The pressure of the air in the building outside the tank will be 87.0kPa
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Someone is standing in a gym 20 m from the wall. The ceiling height is 7 m. If they hit a ball toward the wall with a racket 1.6 m above the floor with a speed of 15 m/s, what is the highest point on the wall that the ball can hit?
A line of charge with uniform density of 40.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm. Find the electric field it creates at the origin
In a high speed rail transportation system, for the comfort of the passengers, the magnitude of the acceleration and deceleration is limited to 2m/s2. What is the minimum time required for a trip of 100 km?
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radialpositions of two points, 0.849 m apart, such that the intensitylevel at one point is 2.48 dB greater than that at the other.
A glucose-winged gull, ascending straight upward at 5.20 m/s drops a shell when it is 12.5 m above ground.
A uniform meter stick of mass M has ahalf-filled can of fruit juice of mass m attached to oneend. Calculate the mass of the can of juice
Find the power factor for an RC circuit connected to a 80.0Hz generator with an rms voltage of 155V
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