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serg [7]
1 year ago
13

A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from

the block?.
Physics
1 answer:
Furkat [3]1 year ago
3 0

A light ray in air enters and passes through a block of glass , the speed will remain same after it emerges from the block

When a light ray enters into the glass then the speed of the light will get decreased because as a light ray enters into a denser medium , the speed of light get decreased . But when the light ray emerges out from glass , it going from denser to rarer medium , due to which speed will increase and come to same value as it was while entering the glass .

To learn more about denser medium here :

brainly.com/question/13613040

#SPJ4

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A particle with a charge of 3.00 elementary charges moves through a potential difference of 4.50 volts. What is the change in el
GuDViN [60]

Answer:

7.2\cdot 10^{-19} J

Explanation:

The change in electrical potential energy of a charged particle moving through a potential difference is given by

\Delta U = q \Delta V

where

q is the magnitude of the charge of the particle

\Delta V is the potential difference

In this problem:

- the charge of the particle is 3.00 elementary charges, so

q=3e=3\cdot 1.6\cdot 10^{-19} J=4.8\cdot 10^{-19}J

- the potential difference is

\Delta V=4.50 V

So, the change in electrical potential energy is

\Delta U=(1.6\cdot 10^{-19}C)(4.50 V)=7.2\cdot 10^{-19} J

7 0
3 years ago
What kind of model is this?
fredd [130]

Answer:

I think it's Experimental

Explanation:

it has atoms on it.

5 0
2 years ago
Read 2 more answers
Will mark brainliest.
egoroff_w [7]

Answer:

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6 0
3 years ago
PLZ HELP!!! Detailed PLZ!
Korolek [52]

Answer:

Potential Energy = 294J, Kinetic Engergy = 48.02J

Explanation:

We have these formulas:

Potential Energy = mass * gravitational force * height (m) = 1 * 9.8 * 30 = 294(J)

Kinetic Energy = 1/2 * mass * velocity^2 = 1/2 * 1 * 9.8^2 = 48.02 (J)

As the rock falling at an acceleration of 9.8m/s^2 which means for each second, the rock increases 9.8m/s. I think we are missing time to find the instantaneous velocity, the formula is (initial displacement - final displacement)/ (initial time - final time) which will directly give the final answer for you.

 

5 0
3 years ago
The basic structural units of orgasm are called
hodyreva [135]
Hi there! The anser is C. cells
Cells are the basic structural unit of all the organisms (including humans).
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3 years ago
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