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Aleks04 [339]
3 years ago
14

Which of the following are energy solutions that release pollution into the air? coal petroleum fuel cells wind energy oil nucle

ar energy tidal energy
Physics
1 answer:
kotykmax [81]3 years ago
7 0
What i think is that some things that release pollution is nuclear energy
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How much electrical energy is used by a 400 W toaster that is operating for 5 minutes?
Shkiper50 [21]

The electrical energy consumed by a toaster is 0.033 Kwh.

<u>Explanation</u>:

The power utilized by the toaster is 400 W.

\text { The power utilized by the toaster is } 400 \mathrm{W} \text { in kilo-watts is } \frac{400}{1000}=0.4 \mathrm{Kw}

The toaster is operated for 5 Minutes.

\text { The toaster is operated for } 5 \text { Minutes in hours is } \frac{5}{60}=0.083 \text { hours. (One minute is } 60 \text { seconds) }

We know that,

\text {power}=\frac{\text {energy}}{\text {time}}

Substitute the values in the above formula to obtain electrical energy,

0.4=\frac{\text { energy }}{0.083}

Electrical energy = 0.4 × 0.083

Electrical energy is 0.033 Kwh.

3 0
3 years ago
What determines the amount of energy a substance has
Aleks04 [339]
If you think more specifically about energy,such as thermal energy,the amount of that energy a substance has is determined by the movement of the molecules.hope this helps u
3 0
3 years ago
On hot sunny days, tire should not be over-inflated,why?
Alenkinab [10]
The adds pressure to the tire which would cause it to burst
4 0
3 years ago
Identfy the parts of he atom that are labeied in the
Black_prince [1.1K]

Answer :

Label A - nucleus.

Label B- electron cloud.

Explanation :

An atom is the smallest unit of a matter that consist of three subatomic particles which are electrons, protons and neutrons.

The protons and the neutrons are located inside the nucleus or the center of the nucleus where the mass of the an atom is concentrated.

The electrons are located around the nucleus.

The protons are positively charged, the electrons are negatively charged and the neutrons are neutral that means it has no charge.

In the picture, label A shows the nucleus.

Electrons has the ability to revolve around the nucleus in a fixed circular orbit. Electron cloud represents the spreading of the electrons energy.

In the picture, label B shows the electron cloud.

Hence, the label A - nucleus and label B- electron cloud.

3 0
3 years ago
a piece of space junk of mass 24kg is at a distance of 7.00 x 10(power 6)m from the centre of the Earth. What is the gravitation
My name is Ann [436]

Answer:

F = 195 N

Explanation:

F = GMm/d²

F = 6.67e-11(5.97e24)(24) / (7.00e6)²

F = 195 N

7 0
3 years ago
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