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A 210g ball is dropped from a height of 1.8m and bounces on a hard floor. The force on the ball from the floor is shown in the figure. How high does the ball rebound?
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Question: A speed skater moving across frictionless ice at 9.2 m/s hits a 5.0 m wide patch of rough ice. She slows steadily, then continues on at 5.8 m/s. What is her acceleration on the rough ice? The response must be t ...
Question: The total translational kinetic energy of the molecules of a sample of gas at 421 k is 3.95x10^4j. How many moles does the sample comprise? Find the average translational kinetic energy of a single molecule. Th ...
Question: An object is placed 30 cm to the left of a converging lens that has a focal length of 15cm. Describe what the resulting image look like (i.e. image distance, magnification, upright or inverted images, real or v ...
Question: The position of a particle moving along an x axis is given by x = 14.0t2 - 3.00t3, where x is in meters and t is in seconds. Determine (a) the position, (b) the velocity, and (c) the acceleration of the particl ...
A woman wishing to know the height of a mountain measures the angle of elevation of the mountaintop as 12°. After walking 1.23 km closer to the mountain on level ground, she finds the angle to be 15.8°. Find the height o ...
Problem: Here we ponder a few issues related to thermodynamic reversihilityfirrerversihility. Recall that a process is said to be thermodynamically reversible if and only if there exists an e?ecing process. That can retu ...
Question: A particle moving along the y-axis has the potential energy U = 4y^3J, where y is in m. A) Graph the potential energy from y=0m to y=2m. B) What is the y-component of the force on the particle at y=0m? C) What ...
Question: Tectonic plates are large segments of the earths crust that move slowly. suppose that one such plates has an average speed of v=2.1 cm/ year. a) What distace d, in meters, does the plate move 1.4 seconds at thi ...
Question: A proton has an initial speed of 3.5 x 10 5 m/s. a) What potential difference is required to bring the proton to rest? b) What potential difference is required to reduce the initial speed of the proton by a fac ...
Question: The potential difference between the plates of a parallel plate capacitor is 35V and the electric field between the plates has a strength of 750V/m. If the plate area is 4.0 x 10 -2 m 2 , what is the capacitan ...
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