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A circular-motion addict of mass 70 kilogram rides a Ferris wheel around in a vertical circle of radius 10 meter at a constant speed of 6.0 m/s.
(a) Evaluate what is the period of the motion?
s
(b) Find what is the magnitude of the normal force on the addict from the seat when both go through the highest point of the circular path?
N
(c) Find what is it when both go through the lowest point?
The rules of tennis specify that the .057-kg ball must bounce to a height of between 53 and 58 inches when dropped from a height of 100 inches onto a concrete slab. What is the change in the momentum of the ball
A roller coaster of mass 250kg has a speed of v=12m/s at point a, located at a height h=15m. The car can move without friction actiong between points a and b. How far does the car travel before coming to rest
Suppose the temperature of 4.72 L of ideal gas drops from 351 K to 275 K. (a) If the volume remains constant and the initial pressure is atmospheric pressure, Find the number of moles of gas
A pion is an unstable particle that has an average lifetime of 2.55 × 10^-8 s. How far does it travel in its lifetime, relative to Earth
An airplane flies due west at a velocity of 645 kilometres per hour (km/h). The wind blows from the north at a velocity of 125 kilometres per hour (km/h). Find the plane resultant velocity?
If you detect a frequency shift of 195.4Hz in the 4000-Hz bell of a bicycle as it approaches and then leaves you, how fast is the bicycle going
A 7.80-g bullet moving at 480 m/s penetrates a tree trunk to a depth of 6.0 cm. Use work and energy considerations to find the average frictional force that stops the bullet
If a charge of 0.30 C passes through a person's chest in 1.0 s, If this rate of charge transfer persists for 4.4s, how many electrons pass through the chest
A 800 kg car pushes a 2000 kg truck that has a dead battery. What is the magnitude of the force of the truck on the car
What must the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610N/C ? Use 9.81m/s^2 for the magnitude
In Figure 5-66, a force F of magnitude 7 N is applied to a FedEx box of mass m2 = 1.0 kg. The force is directed up a plane tilted by ? = 37°. The box is connected by a cord to a UPS box of mass 3.0 kg on the floor. The floor, plane, and pulley are fr..
if a 50 ohm toaster is connected in parallel to two 120 W bulbs and 120 V is applied across the light bulbs/toaster combination what is the current flowing through the toaster
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