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Find an angular speed of a skater.
A 60.0 kg skater begins a spin with the angular speed of 6.00 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. What is the skater's final angular speed?
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Fred rolls an unbiased six-sided die once per second, noting the occasions when the outcome is a six. (a) What is the mean number of rolls from one six to the next six? (b) Between two rolls, the clock strikes one. What ...
King Kong drives his car down the interstate at 25 m/s. He sees a banana peel 500 m ahead. A. How much will king kong need to accelerate if he is to stop before hitting the banana peel? B. How much time will it take King ...
1. Find the wavelength of your color - The visible yellow light has a wavelength of about 570 nm 2. Find the frequency - The frequency of yellow light is 5.3 1014 Hz 3. What part of the spectrum is your light in? - Aroun ...
The blackbody radiation emitted from a furnace peaks at a wavelength of 2.7 10-6 m(0.0000027 m). What is the temperature inside the furnace?
A certain sound has an intensity of 9.195275×10 -4 W/m 2 2.33 m from its source. What is the power emitted by this source in watts? Express your result to three significant digits and in scientific notation. Hint: The ...
A ''cooling bag,'' commonly used for storing water in hot, arid environments is made of a thin porous fabric. A small amount of water diffuses through the fabric and evaporates from the surface of the bag. The rate of ev ...
Chlorinated water for pulp bleaching is being prepared by absorbing chlorine gas into water within a packed tower operating at 293 K and 1:013 × 10 5 Pa pressure. At one point in the tower, the partial pressure of chlor ...
A boat at anchor is bobbing up and down in the sea. The vertical distance, y, in feet, between the sea floor and the boat is given as a function of time, t, in minutes, by y = 15 + sin(2πt). (a) Find the vertical velocit ...
Why is it important to study global demography? What are the forces behind population change? Malthusian Theory: A flawed prediction, or a premonition of times to come? 300 words min. NO PLAGIARISM PLEASE.
An elevator is moving downwards at 4m/s when suddenly someone hits the stop button and it travels another 2.9 m before coming to a rest. Please solve for the acceleration and the change in time.
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