Physics, 20.12.2019 21:31, uniqueray33
100 g of liquid nitrogen at its boiling point of 77 k is stirred into a beaker containing 500 g of 15°c water.
if the nitrogen leaves the solution as soon as it turns to gas, how much water freezes?
the heat of vaporization of nitrogen is 48 cal/g and that of water is 80 cal/g.
a. noneb. 29 gc. 68 gd. 109 g
Answers: 2
Physics, 22.06.2019 13:10, alejandramirand9836
A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)
Answers: 3
Physics, 22.06.2019 17:10, katelynzaro
It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .
Answers: 1
100 g of liquid nitrogen at its boiling point of 77 k is stirred into a beaker containing 500 g of 1...
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