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3 years ago

13

The total kinetic energy of a substance atoms

2 answers:

Alexxandr [17]3 years ago

5 0

Answer:

<h3>. Kinetic energy = 1/2 mv^2</h3>

Strike441 [17]3 years ago

3 0

Answer:

$\frac{1}{2} {mv}^{2}$

this is correct one

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9.(7 +1) Line I 9.7 +9.1 Line 2 The expression was rewritten using the Distributive Property 9. (7 + 1) equals 9. 7 which equals

zhenek [66]

Answer:

Sorry

Explanation:

I really don't know what to say about this question I am not sure what to say about this

3 0

2 years ago

Problem 1. Cylinders and a pendulum A uniform solid cylinder of radius r and mass m can roll inside a hollow cylinder of radius

Nataliya [291]

Answer:

The two answers are in the explanation

Explanation:

Please find the attached files for the solution

7 0

3 years ago

BRAINLIEST WILL BE MARKED FOR THE FIRST ANSWER

slamgirl [31]

Answer:

The weight of the body in the new planet is 100 newtons.

Explanation:

From Newton's Law of Gravitation we find that gravitational force is directly proportional to mass of the planet and inversely proportional to the square of its radius. From this fact we can build the following relationship:

$\frac{F_{1}\cdot R_{1}^{2}}{M_{1}} = \frac{F_{2}\cdot R_{2}^{2}}{M_{2}}$ (1)

Where:

$F_{1}$ , $F_{2}$ - Gravitational force, measured in newtons.

$M_{1}$ , $M_{2}$ - Mass of planet, measured in kilograms.

$R_{1}$ , $R_{2}$ - Radius of the planet, measured in meters.

If we know that $F_{1} = 800\,N$ , $\frac{M_{2}}{M_{1}} = \frac{1}{2}$ and $\frac{R_{2}}{R_{1}} = 2$ , then the expected gravitational force in the new planet is:

$F_{2} = F_{1}\cdot \left(\frac{M_{2}}{M_{1}} \right)\cdot \left(\frac{R_{1}} {R_{2}}\right)^{2}$

$F_{2} = (800\,N)\cdot \left(\frac{1}{2} \right)\cdot \left(\frac{1}{2}\right)^{2}$

$F_{2} = 100\,N$

The weight of the body in the new planet is 100 newtons.

4 0

2 years ago

Why is copper a pure substance? A. Because it is an element B. Because it is a compound C. Because it is a homogenous mixture

expeople1 [14]

A) because it is an element.
Explanation: usually when they say pure substance they mean pure element.
Hope this helped!! :)

3 0

2 years ago

The mass of the Mars is about 0.11 the mass of the earth, its radius is 0.53 that of the earth, and the acceleration due to grav

pishuonlain [190]

Answer:

$3.8377m/s^2$

Explanation:

The force due to gravity on earth's surface on mass $m$ is:

$F=GMm/R^2$

Where,

F = GMm/R2

F = Gravitational Force

G = Gravitational Constant

M = Earth's Mass

m = mass of body

R = Earth's radius

The acceleration is F/m:

$g=F/m=GM/R^2$

For a planet with 0.11M and 0.53R:

$a=G(0.11M)/(0.53R)^2\\=0.3915g\ \ \ \ \ \ \g=9.8m/s^2\\=0.3915\times9.8m/s^2\\\\=3.8377m/s^2$

Hence gravity on Mar's surface is 3.8377 $m/s^2$

4 0

3 years ago