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Suppose a child is riding on a merry-go-round at a distance about halfway between its center and edge. She has a lunch box resting on wax paper, so that there is very little friction between it and the merry-go-round. Which path shown in the sketch will the lunch box take when she lets go? The lunch box leaves a trail in the dust or the merry-go-round. Is that trail straight, curved to the left, or curved to the right? Explain your answer.
suppose instead of using a 12-gauge diameter 2.05 mm solid copper cable you made a hollow copper cable of outer
A certain resistor has a resistance of 1.484 ohms at 20.0 degrees celsius and a resistance of 1.512 ohms at 34.0 degrees celsius. What is its temperature of resistivity
A small droplet of oil with mass of 3.04×10-15 kg is held suspended in a region of uniform electric field directed upward with a magnitude of 5325 N/C
The pilot of an aircraft wishes to fly due west in a 37.70 km/h wind blowing toward the south. The speed of the aircraft in the absence of the wind is 191 km/h.
The chamber of a rock-tumbling machine is a hollow cylinder withmass 60 g and radius 7.1 cm. The chamberis closed off by end caps in the form of uniform circular diskseach of mass 22 g.
A high-frequency photon is scattered off of an electron and experiences a change of wavelength of 8.0×10-4 .At what angle should a detector be placed to detect scattered photon (relative to the direction of the incoming photon).
A positive charge Q = 1800.00 C is uniformly distributed over the volume of a sphere of radius R =3.50 m. Assume a spherical cavity of radius R/2 is cut out of the solid sphere, the center of the cavity being a distance R/2 from the center of the ori..
A cameraman on a pickup truck is traveling westward at 23 km/h while he videotapes a cheetah that is moving westward 38 km/h faster than the truck. What is the magnitude of the cheetah's acceleration
The driver of a 1550 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m. Find the net work done on the car
The bow of a destroyer undergoessimple harmonic vertical pitching motion with a period of 12.0 sand an amplitude of 2.5 m, What is the magnitude of the maximum acceleration
An adult exerts a horizontal force on a sewing that is suspended by a rope of length L, holding it at an angle x with the vertical. The child in the swing has a weight W and dimensions that are negligible compared to L.
The Ed-Scale defines the perfect temperature of a martini to be 14 degrees E and the boiling point of antifreeze to be 100 degrees E. Use this equation to find the freezing point of water in Eds
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