5kg of water (cp = 1 j/kgoc) is pumped to a height of 0.5 m, work done by the motor is 50 j/kg, and heat liberated by it is 5 j/kg, what is the final temperature of the water if the initial temperature was 0 c?
a) 4 c
b) 6 c
c) 2 c
d) 8 c

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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