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Ede4ka [16]
3 years ago
10

What carries energy

Physics
2 answers:
Fed [463]3 years ago
5 0
Yes, electromagnetic waves do carry energy. In fact, every wave carries energy: that is, potential energy.
Brums [2.3K]3 years ago
4 0
Waves and matter. Some waves can move through matter while others cannot. ... Sound waves, on the other hand, cannot move through empty space. Inherently, all waves carry energy from one place to another<span> when they move.</span>
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When does water act as an acid and a base?
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Answer:

<h2>Because water can lose and accept H + ions .......</h2>
7 0
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A device that uses electricity and magnetism to create motion is called a _________motor,magnet,generator . In a reverse process
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A device that uses electricity and magnetism to create motion is called a "Motor" (which converts electric energy into mechanical energy) & <span>In a reverse process, a device that uses motion and magnetism can be used to create "Electromagnetism".

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3 years ago
Read 2 more answers
Which of the following does not use electromagnetic radiation? (Check all that apply)
Nesterboy [21]
I know that refrigerator units do not use electromagnetic radiation
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3 0
3 years ago
A solid sphere of weight 42.0 N rolls up an incline at an angle of 36.0°. At the bottom of the incline the center of mass of the
Alecsey [184]

Answer:

Part a)

KE = 77.95 J

Part b)

L = 3.16 m

Part c)

distance L is independent of the mass of the sphere

Explanation:

Part a)

As we know that rotational kinetic energy of the sphere is given as

KE = \frac{1}{2}I\omega_2 + \frac{1}{2}mv^2

so we will have

KE = \frac{1}{2}(\frac{2}{5}mR^2)(\frac{v}{R})^2 + \frac{1}{2}mv^2

so we will have

KE = \frac{1}{5} mv^2 + \frac{1}{2}mv^2

KE = \frac{7}{10} mv^2

KE = \frac{7}{10}(\frac{42}{9.81})(5.10^2)

KE = 77.95 J

Part b)

By mechanical energy conservation law we know that

Work done against gravity = initial kinetic energy of the sphere

So we will have

mgLsin\theta = KE

\frac{42}{9.81}(9.81)L sin36 = 77.95

L = 3.16 m

Part c)

by equation of energy conservation we know that

\frac{7}{10}mv^2 = mgL sin\theta

so here we can see that distance L is independent of the mass of the sphere

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3 years ago
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Amanda [17]
The answer would be colloid

7 0
3 years ago
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