3 years ago

Which are examples of convection currents ? Select three options.

2 answers:

6 0

Answer: A hot air balloon rising and falling in the atmosphere, a radiator that emits warm air and draws in cool air, and rice moving in a pot of water that is being heated. :)

Ksivusya [100]3 years ago

5 0

Answer:

c e and d

Explanation:

i did the test

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2 years ago

A flat screen TV uses 120 Watts. How much energy is used up if it is left on for 15 minutes? Question 25 options: 4 J 15 J 0.67

Natasha2012 [34]

Answer:

Option d (108,000 J) is the correct answer.

Explanation:

The given values are:

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Time,

t = 15 min.

i.e.,

= 900 sec

As we know,

⇒ $P=\frac{W}{t}$

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⇒ $W=P\times t$

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⇒ $=120\times 900$

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2 years ago