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ki77a [65]
3 years ago
10

Frieda stands on a hill with a slope of 62 if her mass is 49 what is the magnitude of the normal force acting on her

Physics
1 answer:
mrs_skeptik [129]3 years ago
8 0
C ? im not sure cs im not that smart but try and see .
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Twenty grams of a solid at 70°C is place in 100 grams of a fluid at 20°C. Thermal equilibrium is reached at 30°C.
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Answer:

c. is more than that of the fluid.

Explanation:

This problem is based on the conservation of energy and the concept of thermal equilibrium

heat= m s \Delta T


m= mass

s= specific heat

\DeltaT=change in temperature

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then

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Now heat gained = heat lost

therefore,

1000 S_2=800 S_1

S_1=1.25 S_2

so the specific heat of solid is more than that of the fluid.

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