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Q1. At time t=0 a grinding wheel has an angular velocity of 28.0 rad/sec. It has the constant angular acceleration of 35.0 rad/sec^2 until a circuit breaker trips at time t=1.80. From then on, the wheel turns through an angle of 433 as it coasts to the stop at constant angular deceleration.
Q2. Batman (mass = 104 kg) jumps straight down from the bridge into a boat (mass = 600 kg) in which a criminal is fleeing. The velocity of the boat is at first +10 m/s. What is the velocity of the boat after Batman lands in it?
A 4.70 kg mass causes a vertical spring to stretch 0.850 meters. The spring is after that stretch and extra 0.270 meters and release (as a stopwatch starts) causing the spring and mass to oscillate.
A uniform plank of length 5.40 m and weight 217 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 417 N walk on the overhanging part of the plank before it immedia..
James is scheduled for a job interview with Ms. Farrar. He knows that she is in charge of selecting, placing, and evaluating employees for her firm, but he cannot remember her educational background. Which is most likely Ms. Farrar's educational back..
A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s.
What is the wavelength of the light in the glass
calculate the total mechanical energy of the glider at any point in its motion. Calculate the maximum speed of glider.
Write x-versus-t equations of motion
What is the coefficient of static friction
Mary is driving her car at 48 km/h. She approaches an intersection just as the traffic light turns yellow. The yellow light lasts only 3.0 s before turning to red, and she is 30 m away from the near side of the intersection.
What would be the radius of curvature of the cornea
What is the net entropy change
What type of car was involved in the hit and run
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