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Q. At time a grinding wheel has an angular velocity of 22.0 . It has a constant angular acceleration of 28.0 until a circuit breaker trips at time = 1.60 . From then on, the wheel turns through an angle of 438 as it coasts to a stop at constant angular deceleration.
Q. A 1 cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 58 degrees from the normal.
After entering the glass, what is the ray's angle from the normal?
What is phase change as the light is reflected from the top
If air resistance & other effects are ignored how far away did the shell hit.
A rifle with a barrel length of 57 fires an 11 bullet with a horizontal speed of 440. The bullet strikes a block of wood and penetrates to a depth of 12. What resistive force (assumed to be constant) does the wood exert on bullet.
What is the effect of thermal insulation on cooling
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
A large wooden turntable in the shape of the flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3 {rm rad}/{rm s} about a vertical axis through its center.
A 16 g rifle bullet traveling 180 m/s buries itself in a 3.5kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. find the horizontal component of the pendulum's maximum displacement.
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
A 52.5 g Super Ball travelling at 30 m/s bounces off a brick wall and rebounds at 16.0 m/s. A high-speed camera records this event. If the ball is in contact with wall for 3.25 ms, what is the magnitude of the average acceleration of ball during t..
A stone is projected at a cliff of height h with an initial speed of 45.0 m/s directed at an angle θ0 = 66.0° above the horizontal. The stone strikes at A, 5.37 s after launching. Find out (a) height h of the cliff, (b) speed of the stone just before..
An insulated Thermos contains 150cm3 of hot coffee at 83°C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as although..
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.7 m/s at the equilibrium position.
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