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3 years ago

4.6 billion years ago the earth is created from what

Physics

1 answer:

Lina20 [59]3 years ago

6 0

I'm not positive but if I'm reading the question right it would be the big bang sorry if I'm wrong

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How far will the ball go before being caught one meter above the ground?

Reil [10]

Answer:

32 meters

Explanation:

Given:

x₀ = 0 m

y₀ = 1 m

y = 1 m

v₀ₓ = 18 cos 52° m/s

v₀ᵧ = 18 sin 52° m/s

aₓ = 0 m/s²

aᵧ = -9.8 m/s²

Find: x

First, find the time it takes for the ball to be caught.

y = y₀ + v₀ᵧ t + ½ aᵧt²

1 = 1 + 18 sin 52° t + ½ (-9.8) t²

0 = 14.2 t − 4.9 t²

0 = t (14.2 − 4.9 t)

t = 0 or 2.89

It takes 2.89 seconds to be caught. The horizontal distance traveled in that time is:

x = x₀ + v₀ₓ t + ½ aₓt²

x = 0 + (18 cos 52°) (2.89) + ½ (0) (2.89)²

x = 32.1

Rounded to two significant figures, the ball travels 32 meters.

5 0

3 years ago

Read 2 more answers

(b) Assuming h is small in comparison to the radius of the Earth, show that the difference in free-fall acceleration between two

Sholpan [36]

Vertical distance h isΔg $=\frac{-2GM}{ RE^{3} }$

<h3>What is vertical?</h3>

The distance between two vertical places is known as the vertical separation or vertical distance. There are numerous ways to express vertical position using vertical coordinates, including depth, height, altitude, elevation, etc.
The formula for vertical distance from the ground is y = - g * t2 / 2, where g is the acceleration of gravity and h is a height.
The vertical distance between the measurement point and the point of observation on Earth's surface. Altitude is the vertical distance from the measurement place to mean sea level.

Assuming h is small in comparison to the radius of the Earth, show that the difference in free-fall acceleration between two points separated by vertical distance h isΔg = (2GMeH) / RE³:

Given:

Separated between two points=h

And, h∠∠ $R_{E}$ ( $R_{E}$ = radius of the Earth)

Now, $\frac{dg}{dr} =$ $\frac{-2GM}{ RE^{3} }$

$dg =\frac{-2GM}{ RE^{3} } dr$

Δg $=\frac{-2GM}{ RE^{3} }$

Therefore, Vertical distance h isΔg $=\frac{-2GM}{ RE^{3} }$

To learn more about Vertical, refer to:

brainly.com/question/24261456

#SPJ4

4 0

2 years ago

The vibrations along a transverse wave move in a direction _________.

GrogVix [38]

Answer: perpendicular to it oscillations.

Explanation: A transverse wave is a wave whose oscillations is perpendicular to the direction of the wave.

By perpendicular, we mean that the wave is oscillating on the vertical axis (y) of a Cartesian plane and the vibration is along the horizontal axis (x) of the plane.

Examples of transverse waves includes wave in a string, water wave and light.

Let us take a wave in a string for example, you tie one end of a string to a fixed point and the other end is free with you holding it.

If you move the rope vertically ( that's up and down) you will notice a kind of wave traveling away from you ( horizontally) to the fixed point.

Since the oscillations is perpendicular to the direction of wave, it is a transverse wave

5 0

3 years ago

A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction. If the frequency of the siren is 500 Hz

wariber [46]

Answer:

change in frequency is 636 Hz

Explanation:

given data

speed v1 = 36 m/s

speed v2 = 45 m/s

frequency f = 500 Hz

speed of sound s = 343 m/s

to find out

what is the change in frequency

solution

we know here change of frequency formula that is

frequency = $\frac{s+v1}{s+v2}$ (f) ...................1

put here value in equation 1

and we take v2 = -45 because opposite direction

frequency = $\frac{s+v1}{s-v2}$ (f)

frequency = $\frac{343+36}{343-45}$ (500)

frequency = 636

so change in frequency is 636 Hz

8 0

4 years ago

What should you do if you need to pull over to get some rest?

Zielflug [23.3K]

Pull into the lot of a place that's 24 hours therefor if a office drives by its just a car

3 0

3 years ago