3 years ago

The rate at which light energy is radiated from a source is measured in which of the following units?

1 answer:

6 0

The correct answer is A. Lumen

This is the so called energy of light measurement. Other mentioned measurements are used for different things such as measuring light over an area of space or similar.

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Many students use earbuds or headphones while working on a computer or listening to music. Electromagnetics are within the liste

Katyanochek1 [597]

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Explanation:

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3 years ago

Suppose you want to use this human engine to lift a 2.35 kg box from the floor to a tabletop 1.30 m above the floor. How much mu

morpeh [17]

Answer:

The increase in the gravitational potential energy is 29.93 joules.

Explanation:

Given that,

Mass of the box, m = 2.35 kg

It is lifted from the floor to a tabletop 1.30 m above the floor, h = 1.3 m

We need to find the increase the gravitational potential energy. Initial it will placed at ground i.e. its initial gravitational potential is equal to 0. The increase in the gravitational potential energy is given by :

$U=mgh$

$U=2.35\ kg\times 9.8\ m/s^2\times 1.3\ m$

U = 29.93 Joules

So, the increase in the gravitational potential energy is 29.93 joules. Hence, this is the required solution.

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4 years ago

A star is a luminous ball of hot ______ held together by its own gravity.

frosja888 [35]

A star is a luminous ball of hot <span>plasma </span><span>held together by its own gravity.
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4 years ago

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A woman can lift barrels a vertical distance of 1 meter or can roll them up a 2-meter long ramp to the same elevation. If she us

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answer is 1/2 as much force required

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3 years ago

Which records should you consult before determining if an animal is safe to ship

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Your pet must have current vaccinations that are required by the place (state, country, etc.) that it will be entering. Your pet would also need a health certificate that was done by a licensed veterinarian.

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3 years ago