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Two people begin at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of1.50 10-3 rad/s, while the other has an angular speed of 3.20 10-3 rad/s. How long will it be before they meet?
A 45.0-kg girl is standing on a 158-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the surface of ice
A frictionless block of mass 1.95 is attached to an ideal spring with force constant 340 . At the spring is neither stretched nor compressed and the block is moving in negative direction at a speed of 12.6.
Consider three containers of the same volume that are thermally insulated (no heat is transferred) from each other, but are connected by thin pipes that allow gas to pass freely from one to another.
A projectile is fired from ground level at t = 0, at an angleθ with respect to the horizontal. It has an initial speedvo. In this problem we are assuming that the ground islevel. Find the time tH it takes the projectile to reachits maximum height H.
A 70 cm diameter wheel accelerates uniformly about its center from 130 rpm to 280 rpm in 4 s. Determine its angular acceleration
Light of wavelength 590nm passes throughtwo narrow slits 0.60 mm apart. The screen is 1.70 maway. What is the wavelength of the unknown light
A 1.5 kg copper block is given an initial speed of3.00m/s on a rough horizantal surface. Because of friction, theblock finally comes to rest. what happens on the remaining energy
A person exerts a force of 120N on a rope that pulls a sled across a very smooth surface. The rope is oriented 37 degrees above the horizontal. Determine the speed of the sled after moving for 10 m
A person who weighs 653 N is riding a 100-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker, What is the total intensity level
What was the displacement of the spring. An elevator and its load have a combined mass of 1400 kg. Find out the tension in the supporting cable when the elevator, originally moving downward at 12 m/s, is brought to rest with constant acceleration i..
What is the average speed of a rider on this Ferris wheel.
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