3 years ago

Which of the following is distance divided by the change in time?

Physics

1 answer:

vovikov84 [41]3 years ago

4 0

(distance covered) divided by (time to cover the distance) is SPEED.

(straight-line distance and direction between start-point and end-point) is DISPLACEMENT.

(amount and direction of change in speed) divided by (time for the change) is ACCELERATION.

(amount and direction of change in momentum) divided by (time for the change) OR (mass) times (acceleration) is FORCE.

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This is the law of inertia.

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An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0 ∘C and rejects he

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Answer:

2.36 x 10^6 J

Explanation:

Tc = 0°C = 273 K

TH = 22.5°C = 295.5 K

Qc = heat used to melt the ice

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Latent heat of fusion, L = 3.34 x 10^5 J/kg

Let Energy supplied is E which is equal to the work done

Qc = m x L = 85.7 x 3.34 x 10^5 = 286.24 x 10^5 J

Use the Carnot's equation

$\frac{Q_{H}}{Q_{c}}=\frac{T_{H}}{T_{c}}$

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QH = 309.8 x 10^5 J

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Thus, the energy supplied is 2.36 x 10^6 J.

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4 years ago

A mechanic changing the spark plugs in a car notes that the instruction manual calls for a torque with a magnitude of

Papessa [141]

The magnitude (in N) of the force she must exert on the wrench is 150.1 N.

<h3>Force exerted by the wrench</h3>

The force exerted by the wrench is calculated using torque formula as follows;

torque, τ = F x r x sinθ

where;

F is the applied force
r is the perpendicular distance if force applied

F = τ /(r sinθ)

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F = 150.1 N

Thus, the magnitude (in N) of the force she must exert on the wrench is 150.1 N.

Learn more about torque here: brainly.com/question/14839816

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2 years ago

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About 285 meters per minute

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Answer:

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Explanation:

It's Fifty percent

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