3 years ago

A physical property that describes how something feels Is called?

Physics

1 answer:

zubka84 [21]3 years ago

7 0

It's called texture, meaning how something feels.

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The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using D

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Would you be able to post the gel electrophoresis results?

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3 years ago

A heat engine is 20% efficient. If it loses 800 J to the cooling system and exhaust during each cycle, the work done by the engi

Maurinko [17]

Answer: A. 200J

Therefore, the workdone by the heat engine is 200J

Explanation:

Given ;

The efficiency of the heat engine is E = 20% = 0.2

Heat loss L= 800J

For an heat engine the efficiency is measured by the amount of workdone by the heat engine when compared to the heat generated.

Efficiency E = workdone/heat generated × 100%

Heat generated G= workdone W + heat loss L

G = W + L

According to the question.

W = 20% of G

W = 0.2G ......1

L = 80% of G

L = 0.8G

G = L/0.8 ......2

Substituting equation 2 to 1

W = 0.2(L/0.8)

And L = 800J

W = 0.2(800/0.8)

W = 200J

Therefore, the workdone by the heat engine is 200J

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3 years ago

When a car’s wheels turn, the wheels push backward on the road. what is it that makes the car go forward?

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<span>engine makes the car go forward but, it is the engine that makes the wheels go.
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4 years ago

Runaway truck ramps are common on mountainous highways in case the brakes fail on large trucks. If a

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Answer:

$W=-21,870,000\ J$

Explanation:

<u>Work and Kinetic Energy </u>

The work an object does due to its motion is equal to the change of its kinetic energy. Being ko and k1 the initial and final kinetic energy respectively and m the mass of the object, then

$W=\Delta k=k_1-k_0$

Since

$\displaystyle k=\frac{mv^2}{2}$

We have

$\displaystyle W=\frac{mv_1^2}{2}-\frac{mv_0^2}{2}$

The truck has a mass of 60,000 kg and is moving at 27 m/s. The runaway truck ramp must stop the truck, so the final speed is 0. Thus

$\displaystyle W=\frac{(60,000)0^2}{2}-\frac{(60,000)(27)^2}{2}$

$W=0-21870000\ J$

$\boxed{W=-21,870,000\ J}$

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4 years ago

1) When you hold your nose and go underwater, you can still hear sounds that are made above the water, in the air, if they are l

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Answer:

Vibrations

Explanation:

That is why when under water it sounds muffled and you cannot hear clearly.

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2 years ago

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