<span>Newtons 3rd law of motion states that action and reaction are equal and opposite. How it applies in this statement is that when you jump straight upward you hit the floor and you experience an equal magnitude of force against your feet, because force always acts as a result of two objects and whenever forces occur they do so in pairs of equal magnitude acting in opposite directions. I hope this helps!</span><span>
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3 0

3 years ago

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Electromagnetic waves are classified into forms such as radio waves, microwaves, and infrared waves, based on the amount of ener

Anna [14]

Answer: D) wavelength

Explanation:

The energy $E$ of an electromagnetc wave is given by the following formula:

$E=h.f$ (1)

Where:

$h$ is the Planck constant

$f$ is the frequency

Now, the frequency has an inverse relation with the wavelength $\lambda$ :

$f=\frac{c}{\lambda}$ (2)

Where $c$ is the speed of light in vacuum

Substituting (2) in (1) we have:

$E=\frac{hc}{\lambda}$ (3)

This means the amount of energy an electromagnetic wave carries depends on its wavelength (or its frequency), because the speed of light and $h$ are constant.

6 0

3 years ago

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What force was applied to an object if 35 J of work was done and the object moved 7 m? Show your work.

ahrayia [7]

Answer:

5 N

Explanation:

The work done by a force on an object is (assuming that the direction of the force is parallel to the displacement of the object):

$W=Fd$

where

F is the magnitude of the force

d is the displacement of the object

In this problem, we know that:

W = 35 J is the work done

d = 7 m is the displacement of the object

Therefore, we can re-arrange the equation to calculate the force applied:

$F=\frac{W}{d}=\frac{35 J}{7 m}=5 N$

8 0

3 years ago