3 years ago

If a neutral metal comb is held near an object with a negative charge the comb will become charged by?

Physics

1 answer:

solong [7]3 years ago

6 0

The answer is d because it sets of a negative pulls type thing that makes it negative<span />

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How big is the planet earth

AnnZ [28]

After doing some research on Wiki, Google, and Easyscienceforkids, I have come to a conclusion that:

Mass: 5.972 * 10^24 kg

Radius: 3958.8 mi

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3 years ago

What is the pressure of a 300 lb. object on a 100 sq. in. area?

denis23 [38]

Answer:

D. 3 psi

Explanation:

Pressure is defined as force acting per unit area and is numerically expressed as:

$P= \frac {F}{A}$

where P represent pressure, F is force and A is area where the force acts. Substituting 300 lb for force and 100 sq.in for area then pressure,

$P=\frac {300 lb}{100 in^{2}}= 3 \ psi$

Therefore, from the choices given, option D, 3psi is the right choice.

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3 years ago

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Galina-37 [17]

Trial 3 is the correct answer

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3 years ago

Anna Litical is practicing a centripetal force demonstration at home. She fills a bucket with water, ties it to a strong rope, a

dlinn [17]

Answer:

Explanation:

Suppose when bucket is half full it has a mass of 2 m rotating in a circle of radius r

When Bucket is quarter full then it has a mass of m rotating in a circle of radius r.

When an object moves in a circular path then it experiences an inward force which is given by

$F_1=\frac{2mv^2}{r}$

where v=velocity of bucket

Force in case 2 is given by

$F_2=\frac{mv^2}{r}$

Thus $F_1=2F_2$

therefore force required in half bucket is more than force required in quarter bucket full.

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4 years ago

If the pressure acting on a given sample of an ideal gas at constant temperature is tripled, what happens to the volume of the g

-Dominant- [34]

If the pressure acting on a given sample of an ideal gas at constant temperature is tripled, the volume is reduced to one-third of its original value. <em>(a)</em>

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