3 years ago

What did Newton theorize about the universe as a result of observing an apple falling from a tree to the earth?

1 answer:

8 0

<span>A.
Any object of any mass pulls other objects toward it anywhere in the universe. The earth had a force that attracted the apple and the apple had the same force that pulled the earth toward it.</span>

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Haley is trying to pull an object upward. The below forces are acting on the object.

ra1l [238]

For this case, the first thing we must do is define a reference system.

Suppose that the positive direction of the reference system is upward.

We have that the sum of forces in the vertical axis is given by:

Fy = Fp - Fg

Substituting values:

Fy = 5500 - 6000

Fy = - 500

The negative sign means that the direction of the force with respect to the defined coordinate system is downward.

Answer:

The net force is:

↓ 500N

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3 years ago

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How much of the Moon is always illuminated one time? Explain your answer.

Natalija [7]

Answer:

50% of it .

Explanation:

50% of it is illuminated by the Sun.

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3 years ago

5. You head downstream on a river in an outboard.

Elena-2011 [213]

Answer:

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3 years ago

I started to solve this problem but I’m not sure on what to do next.

snow_tiger [21]

ANSWER:

3408.81 kg

STEP-BY-STEP EXPLANATION:

Given:

v = 111 m/s

Ek = 21000000 J

We have that the formula for kinetic energy is as follows:

$E_k=\frac{1}{2}\cdot m\cdot v^2$

We substitute the values given in the exercise and solve for m (mass)

$\begin{gathered} 21000000=\frac{1}{2}\cdot m\cdot111^2 \\ m=\frac{21000000\cdot2}{111^2} \\ m=3408.81\text{ kg} \end{gathered}$

The mass of the helicopter is 3408.81 kilograms.

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10 months ago

A student places two books on a table. One book weighs less than the other book

Gnoma [55]

The book that weighs less

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2 years ago