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A 50-kg girl rides on a giant Ferris wheel of radius 12 m that makes 2 revolutions each minute.
(a) What is the girl?s speed in m/s?
(b) What is the apparent weight of the girl at the lowest point in the ride? (Hint: Her apparent weight is equal to the force of the seat acting on her).
(c) What is the apparent weight of the girl at the highest point in the ride?
(d) If she felt weightless at the top of the ride, how fast would she be moving?
A coin with a diameter of 2.50 cm is dropped on edge onto a horizontal surface. how far does the coin roll before coming to rest
water flows at a rate of 25 lmin through a horizontal 7.0-centimeter-diameter pipe under a pressure of 6.0 pa. at one
A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.00s. At the end of this time, the boatcontinues for an additional 6.00s with an acceleration of +0.518m/s2. Following this, the boat accelerates at -1.49m/s2 for 8.00s.
Calculate the number of joules of kinetic energy that a 1 kg parrot has when it flies at 6 m/s. Kinetic Energy: KE = (1/2)mv2
If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball? (Suppose right is the positive direction.)
A wheel rotating about a fixed axis has an angular position given by q = 3- 2.0t3, where q is measured in radians and t in seconds. What is angular acceleration of the wheel at t = 2.00s.
A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. what is the average force exerted on the ball
Telephone signals are often transmitted over long distances by microwaves. What is the frequency of microwave radiation with a wavelength of 3.3 cm
A disk 1.0cm in diameter is located 2.5 m from a 100-W light bulb. The surface of the disk is a perfect reflector, Calculate the radiation force on the disk
The toroid shown in the figure hasa wire carrying a current I= 9.00 Amperes wrapped around it N= 650times. The inner radius is R1= 24.0cm and outer radiusR2= 28.8cm.
The sun is 30 degrees above the horizon. It makes a 48 meter long shadow of a tall tree. How high is the tree
A 1-microF capacitor, a 10-Ohm resistor and a 1 microH inductor are connected in series with a sinusoidal signal generator of 10V peak voltage amplitude operating at a frequency ω of 100 rad/s. Find the amplitude of current oscillations in the cir..
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