3 years ago

What does the narrator mean when he says that energy is “as old as time itsself “

Physics

1 answer:

guajiro [1.7K]3 years ago

5 0

That as long as we know there has always been energy

Hope this helps :)

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What were the two different alleles for height in the pea plants that Mendel studied?

natta225 [31]

You might want to go to this website, http://www.indiana.edu/~p1013447/dictionary/mendel.htm
Welcome, And i hope this helps :P

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3 years ago

A clock radio is rated as 30 w of power output. if the radio also draws 30 w at 120 v, which will the current draw be?

g100num [7]

P = IV

I = P/V = 30 / 120 = 0.25 A.

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3 years ago

A source emits sound uniformly in all directions. There are no reflections of the sound. At a distance of 12 m from the source,

yaroslaw [1]

Answer:

1.58 W

Explanation:

Since the sound spreads uniformly in all directions, it must be in a form of a circle with radius of 12 m. So the area of the circle is

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From the intensity of the sound we can calculate the power at 12 m

$P = AI = 452.389 * 3.5\times10^{-3} = 1.58 W$

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3 years ago

Billiard balls moving across a pool table is an example of _____ friction.

frozen [14]

It is an example of rolling friction because balls roll.

Answer is ROLLING

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3 years ago

A ball is thrown into the air with an upward velocity of 20 feet per second. Its height, h, in feet after t seconds is given by

Margarita [4]

Thank you for posting your question here at brainly. Feel free to ask more questions.
The best and most correct answer among the choices provided by the question is B. Reaches a max height of 8.25 feet after 0.63 seconds . 

Hope my answer would be a great help for you.

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3 years ago