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A roller ocaster descends 35 meters in its initial drop and then rises 23 meters before going over the first hill. If a passenger at the top of the hill feels an apparent weight which is one half her normal weight, what is the radius of the curvature of the first hill? Assume no frictional losses, and neglect the initial speed of the roller coaster.
The diameter of our disk-shaped galaxy, the Milky Way, is about 1.0 105 lightyears (ly). find the distance between the centers of the two plates
a turntable platter spinning at 78 revmin comes to a complete stop in 29 s. assuming constant acceleration through what
A shop sign is suspended from a uniform pole fixed to a wall and supported by a cable. The mass of the sign is 66 kg, and it's attached to the pole 2.1 m from the wall. The pole's mass is 18 kg and its length is 2.5 m.
question1a small object with the mass of 380 mg carries a charge of 35.0 nc and is suspended by a thread between
if the potential difference between a cloud and the ground is about 13 mv how much charge is transferred in a lightning
A cat dozes on a stationary merry-go-round, at a radius of5.5m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every6.0s.
The output voltage of an AC generator is given by ?v = (120 V) sin (50?t). The generator is connected across a 25.0-? resistor. Find the power delivered to the resistor
An infinite conducting sheet lies in the xy plane. It has a width of 4.5 cm and a current density of 5200 A/m^2 in the negative direction. what is the direction of the force on the electron
a uniform rod of length l and mass m is suspended by two light strings each of length l. find the tension in the
A skier starts from rest at the top of a hill that is inclined at 10.9° with respect to the horizontal. How far does the skier glide along the horizontal portion of the snow
A small electric immersion heater is used to heat 110g of water for a cup of instant coffee. The heater is labeled "200 watts", which means that it converts electrical energy to thermal energy at this rate. Calculate the time required to bring this w..
a wire is formed into a circle having a diameter of 15.0 cm and placed in a uniform magnetic field of 2.90 mt. the wire
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