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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.a) What is the period of the motion?b) What is the magnitude of the normal force on the addict from the seat when both go through the highest point of the circularpath?c) What is it when both go through the lowest point?
A puck with mass m = 0.18 kg slides along a frictionless horizontal surface at v = 6.3 m/s . It hits and sticks to the free end of a spring with k = 18 N/m, Find the period of the subsequent simple harmonic motion
An electron moves with a speed of 8.0 × 10^6 m/s along the +-axis. It enters a region where there is a magnetic field of 2.5 T, Calculate the magnitude of the magnetic force on the electron
How much energy is required to accelerate a spaceship with a rest mass of 112 metric tons to a speed of 0.445 c? Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships..
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. The stone can be thrown by whirling it rapidly in a horizontal circle and releasing it at the right moment. Such a slingshot is used to throw a sto..
A house has a floor area of 186 m2 and an outside wall that has an area of 46.5 m2. The earth's magnetic field here has a horizontal component of 2.56E-5 T that points due north and a vertical component of 4.14E-5 T that points straight down, towa..
A wire 28.0 cm long lies along the z-axis and carries a current of 8.50 A in the +z-direction. find the magnitude of the net magnetic force on the wire
Two positive point charges, each 17? C, lie along the x-axis at x = –0.12m and x = +0.12m.
A super ball, made of rubblerlike plastic, is thrown against a hard smooth wall. What is the magnitude of the impulse delivered by the wall
A charge of -1.0 µC is located at the origin, a second charge of 2.6 µC is located at x = 0, y = 0.1 m, Find the forces that act on each of the three charges
Michael Phelps won a gold medal at the 2008 Beijiing olympics by swimming the 200 meter medley in 1:54:80. On an off-day Mike swims the medley in 1:58:32. What is the speed in mph? (Give the ans. to two decimal places)
19 g of helium gas are placed in a cylinder with a movable piston. The gas is compressed very slowly from a state of ( p1 = 5atm; v1 = 32 x 10^-3m^3) to a state of (p2 = 17atm; v2 = 9 x 10^-3m^3 )
If, between asphalt and rubber, the coeficient of static friction is 1.23 and the coefient of kinetic friction is .98 What is the fastest the car can accelerate
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