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3 years ago

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On his honeymoon, James Joule attempted to explore the relationships between various forms of energy by measuring the rise of te

mperature of water which had fallen down a waterfall on Mount Blanc.
What maximum temperature rise would one expect for a waterfall with a vertical drop of 20 m? The specific heat of water is 4186 J/kg ∙ain K. 32)

A) 0.071 C° B) 0.053C° C) 0.047 C° D) 0.064 C°

1 answer:

Marizza181 [45]3 years ago

8 0

Answer:

The maximum temperature rise = 0.047 °C

Explanation:

Potential Energy, P = mgh

Energy transfered, Q=mcΔT

Potential energy = Energy transfered

mgh = mcΔT

gh = cΔT

ΔT = gh/c

ΔT = (9.81 * 20) / 4186

ΔT = 0.047 °C

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Answer:

Part a)

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Part b)

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Explanation:

Part a)

As we know that ball will reach at maximum height at

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now we have

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Now maximum height above ground is given as

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Part b)

Height of the fence is given as

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$y = (29.4)(5.5) - \frac{1}{2}(9.8)(5.5^2)$

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Part c)

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$97.5 = v_x (5.5)$

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