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Riders on the "Great American Revolution" loop-the-loop roller coaster wear seatbelts as the roller coaster negotiates its 6.5m -radius loop with a speed of 9.8m/s. 1) At the top of the loop, what is the magnitude of the force exerted on a 55kg rider by the roller-coaster seat? 2) At the top of the loop, what is the magnitude of the force exerted on a 55kg rider by the seatbelt?
The coefficient of kinetic friction between block and ramp
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 81.0 m/s at ground level. The engines then fire.
Calculate approximately E at a distance of 40 m (large relative to the plate size) by assuming that the plate is a point charge.
A circuit contains six 290 lamps and a 18 heater connected in parallel. The voltage across the circuit is 120V. If the circuit has a 11A fuse, will the fuse melt if all the lamps and the heater are on.
Three identical masses of 430 each are placed on the x axis. One mass is at = -14.0, one is at the origin, and one is at = 37.0.
Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", defined as volume of water that will cover 1 acre of land to a depth of 1 ft. A severe thunderstorm dumps 2.0 in. of rain in 30 min on a town of area 35 km2. What volume..
A ship sets out to sail to a point 148km due north. An unexpected storm blows the ship to a point 109km due east of its starting point.
A 10-g bullet is fired horizontally into a 300-g wooden block initially at rest on a horizontal service and becomes embedded in it. The coefficient of friction between block and surface is 0.50. The combined system slides 4.0-m before stopping. Wi..
Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What sort of interference does the person sense.
Create a formula to get the time constant of the liquid level system shown in the below figure. When the avg. operating level is h0. The resistance R is linear.
There is a beam that weighs 1500 kilograms and is twenty meters in length. It has a 15000 kilogram mass on the right side, five meters from the center of gravity. obtain the net tension of each brace that is holding up the beam on both sides.
A 9.8-kg object oscillates at the end of a vertical spring that has the spring constant of 1.75 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N•s/m.
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