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A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rpm. What centripetal force must she exert to stay on if she is 1.25 m from its center? What centripetal force does she need to stay on an amusement park merry-go-round that rotates at 3.00 rpm if she is 8.00 m from its center? Compare each force with her weight.
A 3.5 m long horizontal rod has two forces applied to it. One on the far left corner with a force of 4N at 60 degrees downward, Determine the magnitude and direction of the force in the pin
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around the inner core. What is the speed of the spool's ground-touching point
The model airplane in Figure 5.6 is flying at a speed of 14.5 m/s on a horizontal circle of radius 18.1 m. The mass of the plane is 0.801 kg, What is the net work done on the plane
Calculate the nonconservative work
The electron beam inside a television picture tube is 0.40mm in diameter and carries a current of 50uA. How many electrons strike the screen each second
A particle with a mass of 1.5×10?5 kg and a charge of +2.8 microC is released in a (parallel plate) uniform horizontal electric field of 15 N/C. How far horizontally does the particle travel in 0.60s
Light known to be polarized in the horizontal direction is incident on a polarizing sheet. What angles does the transmission axis of the sheet make with the horizontal
A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), How long does it take the swimmer to cross the river
Gas is confined in a tank at a pressure of 10.7 atm and a temperature of 24.1°C. what is the new pressure in the tank
A falling stone takes 0.33s to travel past a window 2.20 m tall on the right. From what height above the top of the window did stone fall.
A 96.0 Kg man stands on a bathroom scale in an elevator that is accelerating upward at a rate of 1.90m/s^2. What is the bathroom scale reading in lbs
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