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2 years ago

Which two changes would decrease the electric force between two charged

Physics

1 answer:

ch4aika [34]2 years ago

6 0

Answer:

it is b and e

Explanation:

<h2>if u look at the words twice you will notice that b and e are both saying the same meanings just in diff rent words way u need to look close on things like that and u will get passing grades </h2>

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An astronomer observes a hydrogen line in the spectrum of a star. The wavelength of hydrogen in the laboratory is 6.563 x 10-7m,

Sergio [31]

Answer:

D. The star is approaching Earth.

Explanation:

As we know by the doppler's effect of light that

$\frac{\Delta \nu}{\nu} = \frac{v}{c}$

here we know that

$\Delta \nu$ = change in frequency

here we know that the wavelength of light coming from the star is decreased so the frequency will increase

$\Delta \nu = \frac{c}{\lambda'} - \frac{c}{\lambda}$

$\Delta \nu =(3\times 10^8)(\frac{1}{6.56186 \times 10^{-7}} - \frac{1}{6.563 \times 10^{-7}})$

$\Delta \nu = 7.9414 \times 10^{10} Hz$

now we have

$\frac{7.9414 \times 10^{10}}{\nu} = \frac{v}{c}$

here we know that

$\nu = \frac{3\times 10^8}{6.563 \times 10^{-7}} = 4.57 \times 10^{14} Hz$

now we have

$v = 5.2 \times 10^4 m/s$

So here correct answer is

D. The star is approaching Earth.

8 0

4 years ago

If two objects interact, the forces they impart on each other will be

Lady_Fox [76]

B) equal in magnitude but opposite direction

4 0

3 years ago

The movement of ocean water is caused by serveal processes______ results in the continual of ocean water facing in a global scal

34kurt

Answer:

Explanation:

3 0

3 years ago

Read 2 more answers

1. Define robbery, burglary, safe burglary, and theft.

neonofarm [45]

Answer:

So if a person breaks a window to get into the house or break open your cupboard to steal, it is considered burglary. Usually, an HPP covers burglary but not theft. Theft would mean the person committing the crime had access to the house or its valuables.

Please mark me the brainliest .....

8 0

2 years ago

Answer this question, please. ______ interference occurs when two waves are in phase.

evablogger [386]

Answer:

constructive interference

Explanation:

waves come together so that they are in phase with each other

3 0

3 years ago