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andrey2020 [161]
3 years ago
8

All light waves move through a vacuum with a constant speed. True or False

Physics
1 answer:
andrey2020 [161]3 years ago
6 0

Answer: True

Explanation:

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They can travel in vacuum as well and travel with the speed of light.

Electromagnetic spectrum consists of electromagnetic waves called as radio waves, microwaves, infrared, Visible, ultraviolet , X rays and gamma rays in order of increasing frequency and decreasing wavelength.

Thus the statement that All light waves move through a vacuum with a constant speed is true.

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An engine uses 5280 j of input heat to do 702 j of work.how much heat is rejected into the air
navik [9.2K]

Answer:

4578 J

Explanation:

INPUT ENERGY = WORK + ENERGY REJECTED

or  ENERGY REJECTED = INPUT ENERGY - WORK

                                         = 5280-702

                                          = 4578J

6 0
3 years ago
What is the period of a wave if the frequency is? 5 Hz
viktelen [127]

Answer:  If the woodpecker drums upon a tree 5 times in one second, then the frequency is 5 Hz; each drum must endure for one-fifth a second, so the period is 0.2 s.

6 0
3 years ago
Which of the following statements is false?
Allushta [10]

Answer:

C

Explanation:

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For example if your weight is 54 kg on earth,

Weight on moon=1/6 of 54=1/6 x 54 = 9kg

7 0
2 years ago
Read 2 more answers
g To decrease the intensity of the sound you are hearing from your speaker system by a factor of 36, you can
Vlada [557]

Answer:

Increase the distance by a factor of 6.

Explanation:

The intensity at a distance r is given by :

I=\dfrac{P}{4\pi r^2}

Here,

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r is distance from source

It means that the intensity is inversely proportional to the distance from the source.

To decrease the intensity of the sound you are hearing from your speaker system by a factor of 36, we can increase the distance by a factor of 6. Hence, this is the required solution.

3 0
3 years ago
A proton with an initial speed of 600,000 m/s is brought to rest by an electric field. Part A Part complete Did the proton move
rodikova [14]

Answer: Part A the right sentence is: Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential

Part B.  aproximatelly 98 times ΔV  V

Part C. the initial kinetic energy of the proton is 1.87 10^3 eV

Explanation: Part A. The field stops the proton so the lines of electric fild must be directed in opposite direction of its movement. This means that the proton moves to a higher potential. Part B The kinetic energy of the  is transformed  in electric potenctial for the proton.

Part C. Energy in J divide the charge of electron gives the energy  in eV.

7 0
2 years ago
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