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A wheel has a rotational velocity of 20·rad/s clockwise. You place you hand against the wheel and the friction between your hand and the rim stops it.
(a) If it takes 3·s to stop the wheel, what is its rotational acceleration?
rad/s2
(b) How far does the wheel rotate while slowing to a stop?
rad
A glass window pane is exactly 20 cm by 36 cm at 10oC. By how much has its area increased as it temperature is 33oC, assuming that it can expand freely? Take the coefficient of thermal expansion for the glass to be exactly 9 x 10-6/Co.
Bicyclists in the Tour de France reach speeds of 34.0 miles per hour (mi/h) on flat sections of the road. What is this speed in meters per second
In an experiment to measure the index of refraction of human skin, it was found that if a beam of unpolarized light was hone on a skin sample from air at an incident angle of 54.7. what is the index of the refraction of this skin sample
A rock is thrown from the roof of a building, with an initial velocity of 10.0 m/s at an angle of 30.0 ° above the horizontal. What is the height of the building
A container ship leaves port A and heads due west with an average speed of 18.0 knots (1knot=1.852 km/hr). what are its average speed and average velocity
a cart with a mass of 200 kg along a frictionless track. Calculate the velocity of the cart at points A and C is the cart is dropped from a height of 100m with an initial velocity of 10 m/s
A constant force vector F =(8.0i+9.0j+12.0k)N acts on a small object of mass 95 g. What is the angle between F vector and d vector
At a height of 1500m, a dive bomber in a vertical dive at 300 km/h shoots a cannon at a target on the ground. What will be the impact speed of the projectile on the ground
Particle 1 and particle 2 have masses of m1 = 1.1 × 10-8 kg and m2 = 6.3 × 10-8 kg, but they carry the same charge q. What is the radius (in cm) of the circular path for particle 2
In a torus of inner radius 1.0m and outer radius 1.5m, a toroidal magnetic field of strength 5.0 tesla is required in the middle (i.e at R = 1.25m). Calculate the current that must pass through the wire to produce the required magnetic field
A certain organ pipe, open at both ends, produces a fundamental frequency of 256 in air.If the pipe is filled with helium at the same temperature, what fundamental frequency will it generate ? Take the molar mass of air to be 28.8 and the molar ma..
A steel pipe 22 m long, installed when the temperature was 15°C, is used to transport superheated steam at a temperature of 125 °C. Steel's coefficient of linear expansion is 1.2 × 10-5 K-1. The pipe is allowed to expand freely when the steam is tran..
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