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3 years ago

8

A battery is used to power a flashlight. When the flashlight is in use, what type of energy is lost during energy transformation

? *
chemical energy
electrical energy
radiant/light energy
thermal energy

2 answers:

noname [10]3 years ago

8 0

It’s either chemical or thermal energy

But most chemical

Hope this helps! :)

diamong [38]3 years ago

4 0

Answer:

The answer is chemical energy

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Which of the following describes glass?

kenny6666 [7]

Answer:

is there any choice? in this question?

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3 years ago

A car accelerated from rest in 3.07s. During this time, the car went 46m forward. What was its acceleration?

kari74 [83]

Vi=0
T=3.07s
D=46m
A=?
A=2(d)/t ^2
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2 years ago

The ratio of Earth's radius to that of Mars (RR/RM) is approximately 19/10, and the ratio of the density of Earth to that of Mar

drek231 [11]

Answer:

The answer is letter c.

Explanation:

We need to find the relation of masses first and then apply the equivalence principle.

We know that the ratio of the density of Earth to that of Mars is approximately 14/10.

$\frac{\rho_{E}}{\rho_{M}}=\frac{14}{10}$

Density is the mass divided by the volume (Here the volume of each planet is a solid sphere of uniform density), so

$\rho_{E}=\frac{M_{E}}{V_{E}}=\frac{M_{E}}{\frac{4}{3}\pi R_{E}^{3}}$

$\rho_{M}=\frac{M_{M}}{V_{M}}=\frac{M_{E}}{\frac{4}{3}\pi R_{M}^{3}}$

Then, the ratio between the densities will be:

$\frac{\rho_{E}}{\rho_{M}}=\frac{M_{E}R_{M}^{3}}{M_{M}R_{E}^{3}}=\frac{14}{10}$

We know that $\frac{R_{E}}{R_{M}}=19/10$ , then we can write the above equation as:

$\frac{M_{E}}{M_{M}}=\left(\frac{R_{E}}{R_{M}}\right)^{3} \frac{14}{10}$

$\frac{M_{E}}{M_{M}}=(\frac{19}{10})^{3} \frac{14}{10}$

Now, using the gravitational force:

To the earth

$g=G\frac{M_{E}}{R_{E}^{2}}$

To the mars

$g=G\frac{M_{M}}{R_{M}^{2}}$

But, we know that $M_{M}=(\frac{10}{19})^{3} \frac{10}{14}M_{E} \: and \: R_{M}=\frac{10}{19}R_{E}$

Therefore, we will have:

$g=G\frac{(\frac{10}{19})^{3} \frac{10}{14}M_{E}}{(\frac{10}{19}R_{E})^{2}}$

$g=\frac{10*10}{14*19}G\frac{M_{E}}{R_{E}^{2}}$

$g_{M}=0.38g$

$g_{M} \approx \frac{2}{5}g$

The answer is letter c.

I hope it helps you!

5 0

3 years ago

When a material absorbs energy from light the energy causes the material to do what?

boyakko [2]

Answer:

To change.

Explanation:

The Law of Conservation of energy states that energy cannot be destroyed but can only be transformed or converted from one form to another. For example, light energy to heat energy.

When a material absorbs energy from light the energy causes the material to change.

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2 years ago

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irakobra [83]

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