2 years ago

Way back in the _____________, there lived a man named Isaac Newton who really loved physics.

Physics

1 answer:

Elden [556K]2 years ago

7 0

Answer:

i can't click the answer bottom but the answer is "17th to 18th century" i hope this helps

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Two ships of equal mass are 110 m apart. What is the acceleration of either ship due to the gravitational attraction of the othe

dusya [7]

Answer:

Acceleration of the ship, $a=2.14\times 10^{-7}\ m/s^2$

Explanation:

It is given that,

Mass of both ships, $m=39000\ metric\ tons=39\times 10^6\ kg$

Distance between two ships, d = 110 m

The gravitational force between two ships is given by :

$F=G\dfrac{m^2}{d^2}$

$F=6.67\times 10^{-11}\ Nm^2/kg^2\times \dfrac{(39\times 10^6\ kg)^2}{(110\ m)^2}$

F = 8.38 N

Let a is the acceleration. Now, using second law of motion as :

$a=\dfrac{F}{m}$

$a=\dfrac{8.38\ N}{39\times 10^6\ kg}$

$a=2.14\times 10^{-7}\ m/s^2$

So, the acceleration of either ship due to the gravitational attraction of the other is $2.14\times 10^{-7}\ m/s^2$ . Hence, this is the required solution.

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2 years ago

A 75kg man climbs the stairs to the fifth floor of a building. A total hieght of 16m. His potential energy has increased by

yKpoI14uk [10]

Answer:

11760 joules

Explanation:

Given

Mass (m) = 75kg

Height (h) = 16m

Required

Determine the increment in potential energy (PE)

This is calculated as thus:

PE = mgh

Where g = 9.8m/s²

Substitute values for m, g and h.

P.E = 75 * 9.8 * 16

P.E = 11760 joules

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2 years ago

A scientific study is repeated by four different groups. Only two groups get the same results. Are the data reproducible?

tangare [24]

No, one more group must get the same result as the other group. This will make it more reliable and reproducible.

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2 years ago

Denise is conducting a physics experiment to measure the acceleration of a falling object when it slows down and comes to a stop

Butoxors [25]

Answer:

Explanation:

Using the formula F = ma, you plug in 4.9 for F (force), and 0.5 for m (mass), then solve for a (acceleration).

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3 years ago

10) Allen was curious about dog interaction at the dog park. He wondered if big dogs liked to play with big dogs and if little d

GalinKa [24]

Answer: B) hypothesis

Explanation:

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2 years ago

Way back in the ­­­­­­­­­­­­_____________, there lived a man named Isaac Newton who really loved physics.

Way back in the _____________, there lived a man named Isaac Newton who really loved physics.