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It has been suggested that rotating cylinders about 9.0 mi long and 6.0mi in diameter be placed in space and utilized as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?
After flying for 15 minute in a wind blowing 42 km/h at an angle of 22 degree south of east, Find the speed of the airplane relative to the air
A 2500 kg car rounds a flat curve of radius 75 m at speed of 80 km/h. if the pavement is icy and the force of static friction is 6000 n, what is the maximum speed the car could safely go around the curve
A gun shoots bullets that leave the muzzle at 213m/s. If a bullet is to hit a target 160.4m away at the level of the muzzle, the gun must be aimed at a point above target. (Neglect air resistance.)
A resistor of 370 is connected in series with a capacitor of 52.0 µF capacitance. The phase shift between the current and voltage at f = 10.3 Hz is
A car is designed to get its energy from a rotating flywheel with a radius of 2.25 m and a mass of 550 kg. The flywheel can be considered as a uniform thin cylinder. Before a trip, the flywheel is attached to an electric motor, which brings the flywh..
Find out the magnitude and direction of the electric field at a distance.
A car of mass 1500kg is driving across a flat parking lot (u=0.3), How fast can the turn be made without causing the car to slide
A geologist finds that a Moon rock whose mass is 10.51 kg has an apparent mass of 6.28kg when submerged in water. What is the density of the rock
Ball of mass "m" hangs on a string of length L` straight down from a cart of mass M standing on horizontal rails. The cart can move along the rails without friction. While the cart is at rest, the ball is given a horizontal velocity v0, v0
an electron moving parallel to the x axis has an initial speed of 4.06 106 ms at the origin. its speed is reduced to
A circular-motion addict of mass 90 kg rides a Ferris wheel around in a verticalcircle of radius 10 m at a constant speed of 6.3 m/s. What is the period of the motion?
A soccer player kicks the ball toward a goal that is 21.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
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