To determine power we need to know the

A. energy required and the time it takes

B. amount of work and the distance covered

C. amount of work in a given time

D. distance and time it takes to do work

What is half-life? a. Half-life is a term that describes the time it takes for half of a particle to disintegrate c. Half-life is a term that describes the time it takes for the amount of radioactivity to increase by one half. b.

landslides and mudslides caused by lava flows are ___ deadly than the lava flow itself. a. more b. less

Why is the term minority group no longer effective

Which is the correct order of processes that occur for water to move from a lake to a cloud and then turn into rain

Which statements describe elements? Check all that apply. A) Atoms of the same element can have different numbers of protons. B) Atoms of the same element always have the same number of electrons.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?

If an object weighs 39.2 n on earth, what is its mass

What happens when pressure is applied to a solid.