2 years ago

Why does the earth stay in orbit around the sun instead of drifting away from it into space?

Physics

1 answer:

pychu [463]2 years ago

3 0

Answer:

b it is b part answer i think so

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What would have to be the self-inductance of a solenoid for it to store 10.5 j of energy when a 1.35 a current runs through it?

Lana71 [14]

It would have to be the right type of metal like copper to run through it

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3 years ago

Question If a force of 2N is used to move a box 1 meter, how much work was done to move the box?

Sunny_sXe [5.5K]

Answer:

I assume that the force of 2N is applied along the direction of motion and was applied for the whole 1 meter, the formula of work is this; Work = force * distance * cosθ where θ is zero degrees. Plugging in the data to the formula;

Explanation:

Work = 2N * 1m * cos 0º.

Work = 2N * 1m * 1

Work = 2Nm

Work = 2 joules

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3 years ago

It is well known that runners run more slowly around a curved track than a straight one. One hypothesis to explain this is that

barxatty [35]

Answer:

$percentage = 6.27 %$

Explanation:

As we know that when runner is moving on straight track then the net force on his feet is given as

$F_s = mg$

while when runner is moving on circular track then we have

$F_c = \sqrt{(mg)^2 + (\frac{mv^2}{R})^2}$

$F_c = m\sqrt{g^2 + \frac{v^4}{R^2}}$

$F_c = m\sqrt{9.8^2 + \frac{8^4}{18^2}}$

$F_c = m(10.42)$

now percentage change is given as

$percentage = \frac{F_c - F_s}{F_s} \times 100$

$percentage = \frac{m(10.42) - m(9.81)}{m(9.81)}\times 100$

$percentage = 6.27 %$

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3 years ago

A hair dryer uses 1100 W of power

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Answer:10

Explanation:acellus

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3 years ago

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Metals combine easily with nonmetals. true or false

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The answer for that is True.

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3 years ago