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A 33 kg girl starting from rest slides down a water slide into a pool. She is traveling at 9.8 m/s when she hits the water and it takes her 3.1 seconds for her to go down the slide. What is the average net force on the girl?
Find the final velocity of the two balls if the ball with velocity v2i = -21.2 cm/s has a mass equal to half that of the ball with initial velocity v1i = +27.6 cm/s
A physicist trying to demonstrate destructive interference stands 2.7m directly in front of a speaker. A second speaker produces identical (coherent) 600Hz tones.
A uniform disk of mass 0.65 kg and radius6.4 cm is mounted in the center of a 10 cmaxle and spun at 600 rev/min. The axle isthen placed in a horizontal position with one end resting on apivot. The other end is given an initial horizontal velocity ..
A sprinter running a 100 m dash leaves the starting block and accelerates to a maximum velocity of 11m/s at 6s into the race. What was the sprinter's average acceleration during the first 6s of the race
two ping-pong balls each have a mass of 2.7 g and carry a net charge of 0.430 microc. one ball is held fixed. at what
Shaving/makeup mirrors typically have one flat and one concave (magnifying) surface. What is the focal length of the mirror
What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
Consider a particle of mass m contrained to lie on the surface of a cone with it's vertex pointing down and half angle alpha. write the equations of constraint
question a 1055 kg van stopped at a traffic light is hit directly in the rear by a 800 kg car traveling with a velocity
A baseball player dives into third base with an initial speed of8.15 m/s. how far does the player slide before coming to rest
Jack and Jill exercise in a 25.0-m-long swimming pool. Find the average velocity and average speed of each swimmer
You throw a ball vertically upward at 22.3 m/s, and then catch it at the same height that you released it. find the ball's speed just before it returns to your hand
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