ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.

Calculate the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting.
________ N

A. 390
B. 40.
C. 4

Answers

Answer 1

The force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting is 390 N.

How to calculate the force?Mass of the boy = 40 kg.The direction of that force is always vertically downward.

At sea level,

The acceleration due to gravity g[tex]= 9.8 m/s^2[/tex]Then the weight of the boy is the mass of the body itself.

                                               m = 40 kg.

Therefore,

                                      w = [tex]40 kg *9.8 m/s^[/tex]

                                          =392 N kg

                                          = 392 N

392N means approximately 390 N.

Hence, the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting is 390 N.

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Answer 2

Final answer:

To calculate the force exerted by a 40 kg boy sitting on a chair at sea level, multiply the boy's mass by the acceleration due to gravity (9.80 m/s²) to get 392 N, which is rounded to 390 N, following significant figure rules.

Explanation:

Calculating Force at Sea Level

To calculate the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting, we apply Newton's second law of motion. Since we are considering his weight (the force due to gravity), the acceleration in this case is due to Earth's gravity, which is approximately 9.80 m/s². Therefore, the formula to calculate the force (F) is:

F = m x g

Where:

m is the mass of the boy and is given as 40 kg.

g is the acceleration due to gravity and is 9.80 m/s².

Now, we calculate the force:

F = 40 kg x 9.80 m/s² = 392 N.

Following significant figure rules, we round our answer to 2 significant figures because the mass was provided to 2 significant figures. Thus, our final answer is:390 N


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Answer: Stockholders

Explanation: stockholders

A corporation gives out its profits as dividends paid to its shareholders.

Who are shareholders?

Individuals or organizations that have made financial investments in a firm by purchasing its shares or stocks are referred to as shareholders. When a company makes a profit, it has the option of keeping those earnings in the company for use in future investments or paying those profits out to shareholders in the form of dividends.

The payment of dividends typically takes the form of cash, but they may also be distributed in the form of extra shares of stock or property. The number of shares a shareholder owns in conjunction with the dividend policy of the company determines the amount of dividend money that shareholder receives. One method by which a company can show appreciation to its shareholders for the money they have invested and maintain their support is through the distribution of dividends.

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please help!! 16 points !!!

Answers

Hey!

--------------------------------------------------

[tex]\Large\boxed{\mathsf{Option~D}}[/tex]

We can automatically eliminate option A and C because finding fossils isn't just trying to find the evolution of whales or bird. Archaeologists use fossils to see how animal evolve over a certain period of time. While they can build animals will the fossils they find but that isn't the most important use of fossils.

--------------------------------------------------

[tex]\Large\boxed{\mathsf{Option~A}}[/tex]

Typically scientists you radioactive dating to find how old a fossil. In this case that isn't an option. I chose option A because scientists can use shape of the fossil to determine what species its from and what part of the body it is.

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Hope This Helped! Good Luck!

What color of light must blue light mix with to create white light?

a.
yellow
b.
white
c.
blue
d.
green

Answers

Answer: a. Yellow

According to the additive theory of color, when we join the three primary colors of light (Red + Green + Blue) we get White light.

On the other hand we have secondary colors of light that are:

Yellow = Red + Green

Magenta = Blue + Red

Cyan = Blue + Green

Now, if we know that:

Red + Green + Blue = White

And:

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What is the Coriolis effect and doppler effect in detail. Tell me about both. Will give brainliest and lots of points

Answers

Answer:

The Coriolis effect is basically Earth's rotation, the Doppler effect is the change in frequency or wavelength of a wave.

I WILL MAKE YOU BRAINLIEST! PLEASE ANSWER THIS CORRECTLY!!!

The Doppler effect indicates that the universe is expanding because_________.

A) light from other galaxies is the same color

B) light from other galaxies is different colors

C) light from other galaxies is blue shifted

D) light from other galaxies is red shifted

Answers

Answer is D light from other galaxies is red shifted

Answer:

D) light from other galaxies is red shifted

Explanation:

The Doppler effect indicates that the universe is expanding because light from other galaxies is red shifted.

Hope this helps!

I took the test.

A wave is produced in a rope. The wave has a speed of 33 m/s and a frequency of 22 Hz.

What wavelength is produced?

Answers

Answer: 1.5m

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1.5 is the answer to the question

The melting point of ice is the same temperature as the of water.

Answers

Answer:

Answer is freezing point of water. The same melting point of ice is the same freezing point of water.

Answer:

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Explanation:

In the case of freezing point and melting point there is a same transition of matter. In this case, freezing point is defined as the, liquid is changing into solid and this process will occur  at the same temperature when melting is occur means solid is change into liquid.

When water is freezing or melting any one can notice that its temperature will remain at 0°C throughout these processes whether ice is converting into liquid or liquid is converting into ice.

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