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3 years ago

Why doesn't the moon hit Earth's surface?

2 answers:

7 0

Because the Moon is never still. It constantly moves around us. Without the force of gravity from the Earth, it would just float away into space.

goldfiish [28.3K]3 years ago

6 0

Answer:

The reason is that the Moon is never still. It constantly moves around us. Without the force of gravity from the Earth, it would just float away into space. This mix of velocity and distance from the Earth allows the Moon to always be in balance between fall and escape.

Explanation:

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5. How are electromagnetic waves similar to ocean waves?.

Masteriza [31]

Answer:

Electromagnetic waves have crests and troughs similar to those of ocean waves. The distance between crests is the wavelength. The shortest wavelengths are just fractions of the size of an atom, while the longest wavelengths scientists currently study can be larger than the diameter of our planet!

Explanation:

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3 0

2 years ago

What does the Bohr Model show us?

aivan3 [116]

Answer:

Explanation:

5 0

3 years ago

I have an algerbra 2 question.

Andreyy89

In order to find out if the exponential function represents a growth or a decay, let's look at the number that is base to the exponent x.

If the number is greater than 1, so the function represents a growth, and if the number is less than 1, the function represents a decay.

Since the number is 1.075, the function represents a growth.

To find the % increase, first let's convert the number to percentage, and then subtract 100%:

$\begin{gathered} 1.075=1.075\cdot100\text{\%}=107.5\text{\%} \\ 107.5\text{\%}-100\text{\%}=7.5\text{\%} \end{gathered}$

So the percent increase is 7.5%.

7 0

1 year ago

A 10,000 N piano is dropped from the top of a building. When the piano reaches terminal speed…

wel

a). When the piano reaches terminal speed, it is no longer accelerating,
so the net force on it must be <em>zero</em>.

b). If the net force on the piano is zero, the upward force of air resistance on it
must be exactly equal to the downward force of gravity ... <em>10,000 N</em>.

7 0

3 years ago

A single frictionless roller-coaster car of mass m = 55 kg tops the first hill with speed v0 at height h = 22.0 m. How much work

sertanlavr [38]

The gravitational potential energy of the roller-coaster at point A and B respectively 11870.10 Joule and 5935.05 Joule.

<h3 /><h3>What is gravitational potential energy?</h3>

The energy that an item has or acquires when its location changes as a result of being in a gravitational field is known as gravitational potential energy. Gravitational potential energy can be defined as an energy that has a connection to gravitational force or gravity.

According to the question:

Mass of the rollercoaster: m = 55 kg.

Height of point A: h =22.0 m.

Height of point B: h/2 = 22.0/2 m = 11.0 m.

Height of point C = 0.

Taking, acceleration due to gravity: g = 9.81 m/s² we get:

The gravitational potential energy of the car at point A:

E₁ = mgh = 55 kg × 9.81 m/s² × 22.0 m = 11870.10 Joule.

The gravitational potential energy of the car at point B:

E₂ = mgh/2 = 55 kg × 9.81 m/s² × 11.0 m = 5935.05 Joule.

Hence, gravitational potential energy of the car at point A and B respectively 11870.10 Joule and 5935.05 Joule.

Learn more about gravitational potential energy here:

brainly.com/question/19768887

#SPJ1

6 0

1 year ago