A student who weighs 550 N is wearing a backpack that weighs 80 N. The student is standing still on level ground. Give your answers to the following questions in newtons. Remember, enter only the number; don't try to enter the units.a) What is the magnitude of the net force on the student?b) What is the magnitude of the contact force on the student by the backpack?
c) What is the magnitude of the contact force on the student by the ground?

Answers

Answer 1
Answer:

Answer:

Explanation:

a) The magnitude of the net force on the student = 0 N since the student is standing still on level ground and upward reaction force = downward force.

b) the magnitude of the contact force on the student by the backpack = 80 N since the student was backing the backpack

c) the magnitude of the contact force o the student by the ground = 550 N + 80 N = 630 N reactional force on the student


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How is 1 hectoliter different from 1 kiloliter?

Answers

For this case the main unit is liter.

The first thing you should know is that the liter is a unit of volume.

The difference then between hectoliter and kiloliter is the conversion factor.

For hectoliter we have:

1 hectoliter = 100 liters

For kiloliter we have:

1 kiloliter = 1000 liters

Answer:

The difference between both is the conversion factor:

1 hectoliter = 100 liters

1 kiloliter = 1000 liters

a kiloliter is smaller than hectoliter

Equal amounts of water are kept in a cap and in a dish which will evaporate faster ?why

Answers

The water in the dish evaporates quickly as the surface area of dish is greater than the surface area of the cap, which enables the water in the dish to evaporate quicker.
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The speed of a wave is determined by multiplying the wavelength by the frequency

Answers


Wellll . . . that's not a very easy way to do it.  You'd still need
to figure out a way to measure the wavelength AND a way to
measure the frequency, so you won't find many engineers
actually trying to determine the wave speed by doing all of that.

But your statement is correct.  The product of

                       (wavelength) times (frequency)

IS the speed of the wave.

What measures the distance between two consecutive crests of a wave?

Answers

The distance between two successive crests or two successive troughs is the wavelength for a transverse wave. The height of the crest from the undisturbed water position or the depth of the trough from the undisturbed water position is the amplitude of the wave.

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Answers

The strong nuclear force

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The space shuttle is descending through the earth's atmosphere. How is the mass of the shuttle affected?A. It will remain constant.
B. It will increase with descent.
C. It will decrease with descent.

Answers

the answer is not C i turned it in and got that question wrong.

the answer is B it will increase with descent

I turned it in the second time and i got it right

Answer:it will remain consent because it will be floating up instead of descending

so thats all i have hope i help

Explanation: