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Mrac [35]
3 years ago
12

One liter of water at 56◦C is used to make iced

Physics
1 answer:
Genrish500 [490]3 years ago
8 0

Answer:22.6g

Explanation:

Mass of water(mw)=1liter=1000g

Final temperature=20°C

Temperature of ice=0°C

Temperature of water=56°C

Change in temperature of water=56-20=36

change in temperature of ice=20-0=20

Specific heat of water=1cal/g°C

Latent heat of ice=79.7cal/g

1000x1x36=mx79.7x20

36000=1594xm

Divide both sides by 1594

36000 ➗ 1594=1594xm ➗ 1594

22.6=m of ice

m of ice=22.6g

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3 years ago
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3 years ago
A disk of radius 10 cm speeds up from rest. it turns 60 radians reaching an angular velocity of 15 rad/s. what was the angular a
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Answer:

a) α = 1.875 \frac{rad}{s^{2} }

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Explanation:

Given:

ω1 = 0 \frac{rad}{s}

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*side note: you can replace regular, linear variables in kinematic equations with angular variables (must entirely replace equations with angular variables)*

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