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3 years ago

Mirrors produce images by doing which of the following to light?

Physics

1 answer:

Gemiola [76]3 years ago

4 0

Answer: C

Reflection

Explanation: Light travels in a straight line. Reflection is one of the properties of light. And this is the property in which mirror make use of. The ability of light to bounce back. It's this bouncing back characteristics of light ray that eventually produce the image of an object by the mirror.

If the light ray is absorbed, no image will be produced.

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A cylindrical capacitor is made of two thin-walled concentric cylinders. The inner cylinder has radius , and the outer one a rad

lianna [129]

Answer: $9.6\times 10^{-8} J$

Explanation:

The capacitance of cylindrical capacitor is

C= $\frac{2\pi \varepsilon _0L}{\ln\frac{r_2}{r_1}}$

C= $\frac{2\pi \times 8.854\times 10^{-12}\times 150}{\ln\frac{8}{4}}$

C= $1.2\times 10^{-8} F$

potential Energy stored in capacitor= $\frac{1}{2}CV^2$

= $\frac{1}{2}\times 1.2\times 10^{-8}\times 4^2$

= $9.6\times 10^{-8} J$

6 0

3 years ago

The power needed to operate your body is about 100 watts. Suppose a human body (of typical mass) could run on fusion power and c

dem82 [27]

Answer:

$5.04\times10^{16}$ J of energy is available through fusion .

Explanation:

let us consider weight of the human body on an average be 70 kg .

since 0.8% of mass is used to convert into energy = $70\times \frac{0.8}{100} =0.56kg$

since according to einstein mass energy equation

$E=MC^{2}$

$E=0.56\times 9\times10^{16}\\ =5.04\times10^{16}J$

8 0

4 years ago

Explain why white light splits up into the different colours when it goes through a prism

Paladinen [302]

Explanation:

beacuse light is mixture of many different colours,each with different frequency

7 0

3 years ago

If a star is 75 light years away,how long is it before we see the light from that star on Earth ?

Cloud [144]

It will take "Exact 75 years", 'cause light takes 1 year for 1 light years.

Hope this helps!

4 0

3 years ago

When a warm air mass moves into an area where a cold air mass is located, it is called a(n) _____?

rusak2 [61]

It is called a warm front when a warm air mass moves into an area where a cold air mass is located based on the blanked sentence above. A warm front is a condition where a warm air mass is replacing a cold air in a place. The character of a warm front condition is an increasing in temperature of a place which is caused by the moving warm air mass<span>.</span>

8 0

4 years ago