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Softa [21]
3 years ago
12

NEED HELP ASAP QUIZ

Physics
1 answer:
frosja888 [35]3 years ago
6 0
The correct answer should be “d” I believe you do power x distance
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Suppose that you measure the light of a star between 640 and 680 nm and you get a very strong peak around 650 nm. what can you s
Llana [10]

Answer: The star is moving away from Earth

Explanation:

Let's begin by explaining what the Doppler shift is:

This is related to the Doppler effect and refers to the change in a wave perceived frequency (or wavelength=color) when the emitter of the waves, and the observer move relative to each other.  

From there, it is deduced that the farther the object is, the more redshifted it is in its spectrum. For example, as a star moves away from the Earth, its espectrum turns towards the <u>red</u> and as the star moves toward the Earth, its espectrum turns towards the <u>blue</u>.

In this sense, since the peak in wavelength is around 650 nm, which corresponds to red, it can be said the star is moving away from Earth.

3 0
4 years ago
Simple Circuit and Ohm's Law Check-for-Understanding
Vanyuwa [196]

Answer:

current, only

Explanation:

current:I

voltage:U

resistance:R

formula: I=U/R

Increasing the battery cause the increasing in the voltage. Resistance does not normally change. And the current would increase.

4 0
3 years ago
Read 2 more answers
Increasing the frequency of a wave does what to its period
Ivenika [448]
If the frequency is large then the period is short and if the frequency is small then the period is long
5 0
4 years ago
ASAP PLEASE! WILL GIVE BRAINLIEST ANSWER! The pictures below show the wavelengths and intensities of electromagnetic radiations
rjkz [21]

As per Weins displacement law the wavelength of light for which we get the peak of the graph is always inversely proportional to the temperature.

So we can say

/lambda = \frac{b}{T}

So here if temperature becomes more cool then wavelength will increase

here we know that

\lambda_1 = 8500 A^o

\lambda_2 = 6000 A^o

\lambda_3 = 3500 A^o

It means the hottest star out of all three is star 3

and coolest star is star 1

now if we star 2 becomes cooler then it means its temperature will go near to star 1 and hence it will more look like to star 1.

So correct answer is

it will look more like Star 1

6 0
3 years ago
What determines whether or not work is being done?
FromTheMoon [43]

C is the correct answer but the best possible answer is that work is done when a force is imposed on an object and the object moves in the same direction as the force

Hope this helps!

3 0
3 years ago
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