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3 years ago

A 1kw electric heater is switched on for ten minutes. how much heat does it produce

Physics

1 answer:

Ainat [17]3 years ago

4 0

H= P × t

1kW= 1000w

10 min = 600s

H= 1000×600=600,000J

=> 143.40kcal

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elena-s [515]

I think the question meant to say net force on the box. Since force is a vector, the direction matters. 20N left is negated completely by the 50N right, which means the net force is 50N-20N to the right, 30N.

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3 years ago

If you had 8 balls and 7 of them were a certain weight, and 1 of them was heavier, how could you find the heaviest ball. All the

dybincka [34]

Answer:

There are two method of comparing the balls 1) using a balance 2) by only 2 weighings.

Explanation:

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2--- one of the group is heavier than other and named as (Case B)

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3 years ago

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2 years ago

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There isn't a direct answer to this, but I can show you!

This is how you group Pennies, Nickels, and Dimes.

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1 Nickel= 5 cents.

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Imagine if there was 5 pennies, 3 dimes, and 8 Nickels.

That might seem like a lot of numbers, but it's pretty simple!

You know how pennies are worth 1 cent? If we had 5 pennies, that would be 5 cents.

1+1+1+1+1=5 cents.

Then, we have 3 dimes. Dimes are each 10 cents.

So, 10x3 (If you know multiplication, if not, you will learn it later) :)

10+10+10= 30 cents.

Now, nickels. We have 8 nickels! Remember, each nickel is 5 cents.

5+5+5+5+5+5+5+5=

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Now add all of the coins up.

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I hope this helped! If you need more help, you can ask me. :)

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3 years ago

A 1kw electric heater is switched on for ten minutes. how much heat does it produce​

A 1kw electric heater is switched on for ten minutes. how much heat does it produce