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2 years ago

What is the temperature increase of 4.0 kg of water when it is heated by

Physics

1 answer:

Nikolay [14]2 years ago

6 0

Answer:

ΔT = 28.667°C is the answer.

Explanation:

Given, Mass of water = 4.0 kg

Water is heated by = 8 × 10² W = 800 W

Time = 10 min = 10 × 60 = 600 s

Now, using the equation of specific heat,

Q = mcΔT

where c is the specific heat capacity of water = 4186 J/kg°C

Q = Pt

Substituting,

Pt = mcΔT

800 × 600 = 4 × 4186 × ΔT

480000 = 16744 × ΔT

ΔT = 28.667

Temperature increased, ΔT = 28.667°C

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A car going at v = 29.7 m/s (67 mph) rounds a curve of radius R = 50.0 m, where the road is banked at an angle of θ = 30.0°. Wha

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Answer:

μ = 0.6

Explanation:

given,

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N sin θ + f cos θ = F_{net}

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3 years ago

The greatest wind speed recorded on Earth’s surface is 231 miles per hour. What is the speed in kilometers per hour?

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3 years ago

During a softball game, a batter hits a ball upward from an initial height of 3 feet. the height, in feet, of the softball is gi

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