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2 years ago

What does the universe look like on very large scales?

Physics

1 answer:

Anestetic [448]2 years ago

3 0

Answer:

it looks like dots and just black space on a large scale

Explanation:

on a large scale the universe especially our milky way looks small

hope this helps

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If the work done is 360 J, and the force used to do the work is applied over a distance of 12 m, what is the value of the force

hoa [83]

The formula for work is $W=Fdcos\theta$ . Plugging in the numbers, you get:
$360=F(12)cos(0)$
$F= \frac{360}{12}$
The answer is 30 N.

3 0

3 years ago

Read 2 more answers

A new spacecraft is built with an engine that is able to produce constant acceleration of 1g, where g = gravity’s acceleration o

QveST [7]

given that acceleration due to gravity is g = 10 m/s^2

speed of the rocket will reach to 0.9c

$v_f = 0.9* 3 * 10^8 = 2.7 * 10^8 m/s$

now by kinematics

$v_f = v_i + a*t$

$2.7 * 10^8 = 0 + 10*t$

$t = 2.7*10^7 s$

Part b)

distance traveled by it in above time

$d = v*t + \frac{1}{2}at^2$

$d = 0 + \frac{1}{2}*10*(2.7*10^7)^2$

$d = 3.645 * 10^{15} m$

so this is the distance covered by the object

3 0

3 years ago

How to find initial velocity, when the acceleration is slowing down.

Makovka662 [10]

Example: Vi= Vf-(at) , Vf=200m/s , a = 10m/s2 , t = 12s

8 0

3 years ago

A normal atom is electronically ** (positive/negative/neutral) because the number of ** (protons/neutrons/electrons), each with

ra1l [238]

Answer:

(neutral)

(protons)

(electrons)

Explanation:

Electrons have a negative charge (-) while protons have a positive (+) charge.

Atoms will usually be neutral, which means that there will be no charge.

For an atom to have a neutral charge, protons and electrons must "cancel" each other out. For this to happen, you need to have the same amount of each.

Positive will "cancel" out the negative.

4 0

2 years ago

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted o

Inessa05 [86]

Answer:4.003 MPa

Explanation:

Given

Area of heel $A=1.64 cm^2\approx 1.64\times 10^{-4} m^2$

Mass of woman $m= 67 kg$

Pressure is defined as Force applied in over an area such that it is perpendicular to it i.e.

$Pressure=\frac{Force}{Area}$

$P=\frac{F}{A}$

$P=\frac{mg}{A}$

$P=\frac{67\times 9.8}{1.64\times 10^{-4}}$

$P=400.365\times 10^{4} Pa$

$P=4.003 MPa$

7 0

3 years ago