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3 years ago

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An object has a mass of 15 kg. on planet x, the object weighs 126 n. the force of gravity on planet x is _____. 0.12 m/s2 8.4 m/

s2 1875 m/s2

2 answers:

alexandr402 [8]3 years ago

4 0

<span>8.4 m/s^<span>2
Is correct!</span></span>

Lana71 [14]3 years ago

4 0

Answer:

B. 8.4 m/s^2

Explanation:

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"4.What determines how many figures are significant in reported measurement values? What

MAXImum [283]

As the number of significant figures increases, the more accurate or precise the measurement is.

<h3>What is significant figure?</h3>

The term significant figures refers to the number of important single digits in the coefficient of an expression in scientific notation.

Significant figures are the digits in a value that are known with some degree of confidence.

The effect of reporting more or fewer figures or digits than are significant;

As the number of significant figures increases, the more accurate or precise the measurement is.

As precision of a measurement increases, so does the number of significant figures.

Learn more about significant figures here: brainly.com/question/24491627

#SPJ1

8 0

2 years ago

a body of a mass 1kg suspended from a spring is found to stretch the spring by 10cm. (A) what is the spring constant? what is pe

Nikitich [7]

Answer:

(A) The spring constant is <u>98 N/m.</u>

(B) The period of oscillation is <u>0.635 s.</u>

Explanation:

Given:

Mass of the body is, $m=1\ kg$

Extension length of the spring is, $x=10\ cm=0.1\ m$

Now, let 'k' be the spring constant.

The force acting on the body is due to gravity only and is equal to its weight.

So, weight of the body is given as:

$F_g=mg\\F_g=1\times 9.8\\F_g=9.8\ N$

Now, we know that for a spring-mass system, the net force acting on the body is equal to the product of the spring constant and extension length. Therefore,

$F_g=kx\\9.8=k(0.1)\\k=\frac{9.8}{0.1}=98\ N/m$

Hence, the spring constant is 98 N/m.

(B)

Period of oscillation of a body of spring-mass system in SHM is given as:

$T=2\pi\sqrt{\frac{m}{k}}$

Plug in the given values and solve for period 'T'. This gives,

$T=2\pi\sqrt{\frac{1}{98}}\\T=2\pi\times 0.101\\T=0.635\ s$

Therefore, the period of oscillation is 0.635 s.

5 0

3 years ago

Which state or states of matter take(s) the shape of its container? A) gas B) solid C) liquid D) liquid and gas

SpyIntel [72]

Answer:

D) liquid and gas

Explanation:

The three main states of matter are:

- Solid: in solids, the molecules are bond together by strong intermolecular forces, so the molecules are not free to move. Therefore, a solid has a definite shape, so it does not take the shape of its container.

- Liquid: in liquids, molecules are not bond together, so they are free to move (still, there are some weak intermolecular forces which keep them close to each other). Since in liquids molecules can slide past each other, they take the shape of the container.

- Gas: in gases, molecules are totally free to move, so gases take the shape (and also the volume) of the container.

Based on the definitions above, we can conclude that the correct answer is

D) liquid and gas

7 0

3 years ago

The resource speaks of the atmosphere as if it were living, in the sense that as the earth's surface is heated by the light from

Shtirlitz [24]

Explanation:

The uneven heating causes temperature differences, which in turn cause air currents (wind) to develop, which then move heat from where there is more heat (higher temperatures) to where there is less heat (lower temperatures). The atmosphere thus becomes a giant "heat engine", continuously driven by the sun.

Wind is the result of pressure changes in the atmosphere due to temperature.

6 0

3 years ago

what is the final potential if 4j of work done to move 2c of charge from a point having initial potential of 5

a_sh-v [17]

Answer:

It’s 1

Explanation:

Potential difference =Work Done (in Joules)/ Total Charge(in Coulomb)

So Here

Potential difference =2J/2C

=1V

thankyou : )

7 0

3 years ago