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500 gram of liquid nitrogen at 77k is stirred into a beaker containing 500 gram of 15 C water. If the nitrogen leaves the solution as soon as it turns into a gas, compute how much water freezes?
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Question: A particle leaves the origin with an initial velocity v = (3.00 i hat) m/s and a constant acceleration a = (-3.00 i hat - 1.400 j hat) m/s2 (a) What is the velocity of the particle when it reaches its maximum x ...
Question: A pendulum has a period of 1.95 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appropriate ...
Question: Part A: What magnitude of force must the worker apply to move the crate at constant velocity? Express your answer using two significant figures. Part B: How much work is done on the crate by this force when the ...
Question: A spherical balloon has a radius of 6.95m and is filled with helium. The density of helium is 0.179 kg/m3, and the density of air is 1.29 kg/m3. The skin and structure of the balloon has a mass of 960kg . Negle ...
Question: A sump pump is draining a flooded basement at the rate of 0.500 L/s, with an output pressure of 3.00 ✕ 105 N/m2. Neglect frictional losses in both parts of this problem. (a) The water enters a hose with a 3.0 ...
Question: The specific heat capacity of water is 4190 J/kg K, its heat of melting is 3.33 x 10^5 J/kg, and its heat of vaporization is 22.6 x 10^5 J/kg. For 1 kg of water, which of the following requires the most thermal ...
Can you please help me figure out what to do in this equation and why? While passing between Earth & Moon, a spacecraft is located on line connecting centers of two bodies and is at a distance of d=102km from radio anten ...
Need help answering this question The ancient Egyptians used simple machines to build the pyramids. Discuss how you might use one or more of the simple machines to move the massive stone blocks up the growing pyramid, an ...
Suppose the convention were adopted that defines W and W 0 in the first law of thermodynamics to be the "work done on the system by the surroundings." a. Write the first law with this alternate convention. b. Why do the ...
Question: A stone is thrown vertically upward with a speed of 24.0m/s. a) how fast is it moving when it is at a height of 13.0m? I got 17.9 m/s b) How much time is required to reach this height? I got 4.28s and 6.20s c) ...
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