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2 years ago

What is nuclear power

Physics

1 answer:

katrin2010 [14]2 years ago

3 0

Answer:

<h2>D. All of the statements describe nuclear power</h2>

What is NUCLEAR POWER? 

➡️ is the use of nuclear reactions to produce electricity.

➡️ it can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. 

Hope it helps

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Step2247 [10]

Answer:

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Explanation:

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3 years ago

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An object measures 7.32 cm by 2.14 cm by 3.21 cm and the mass is 7.89 g. Calculate the density.

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3 years ago

A positively charged object is brought near but not in contact with the top of an uncharged gold leaf electroscope. The experime

Olin [163]

Answer:

The leaves of the electroscope move further apart.

Explanation:

This is what happens; when the positive object is brought near the top, negative charges migrating from the gold leaves to the top. This is because the negative charges in the gold are attracted by the positive charge. Thus, it leaves behind a net positive charge on the leaves, though the scope remains neutral overall. To that effect, the leaves repel each other and move apart. If a finger touches the top of the electroscope at the moment when the positive object remains near the top, it basically grounds the electroscope and thus the net positive charge in the leaves flows to the ground through the finger. However, the positive object continues to "hold" negative charges in place at the top. Ar this moment the gold leaves have lost their net positive charge, so they no longer repel, and they move closer together. If the positive object is moved away, the negative charges at the top are no longer attracted to the top, and they redistribute themselves throughout the electroscope, moving into the leaves and charging them negatively.

Thus, the leaves move apart from each other again and we now have a negatively charged electroscope. If a negatively charged object is now brought close to the top, but without touching, the negative charges already in the electroscope will be repelled down toward the leaves, thereby making them more negative, causing them to repel more, and hence move even further apart.

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3 years ago

A heat lamp produces 32.8 watts of power at a wavelength of 6.5 μm. How many photons are emitted per second?

Svet_ta [14]

Answer:

$Photon/sec=1.07\times 10^{21}$

Explanation:

The expression for the power is:-

$Power=\frac{Energy}{Time}$

Also, $E=n\times \frac{h\times c}{\lambda}$

Where,

n is the number of photons

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

$\lambda$ is the wavelength of the light

So,

$Power=\frac{n}{Time}\times \frac{h\times c}{\lambda}$

Thus, the expression for photons per second is:-

$\frac{n}{Time}=\frac{Power\times \lambda}{h\times c}$

Given that:-

Power = 32.8 Watt

$\lambda=6.5\ \mu m=6.5\times 10^{-6}\ m$

So,

$Photon/sec=\frac{32.8\times 6.5\times 10^{-6}}{6.626\times 10^{-34}\times 3\times 10^8}=1.07\times 10^{21}$

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3 years ago

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mylen [45]

To point out that relationships call for regular maintenance. Cars need regular oil checkups and such and so do relationships.

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4 years ago