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Jaquelin Jast

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Cards in this guide (19)
What is nuclear energy

Nuclear energy is the energy in the nucleus, or core, of an atom. Atoms are tiny units that make up all matter in the universe. Energy is what holds the nucleus together. There is a huge amount of power in an atom's dense nucleus. Nuclear energy is seen when nuclear fusions or fissions happen.

How can you identify a fixed pulley

It is set in one position and cannot move.

apex :)

Properties of matter are typically broken into two categories physical and

chemical

Which form of energy is due to the movement of electrons

ELECTRICAL

Is it bad if you have a heavy period on one month and a light one the next month

No it is not bad, as some ladies have a heavy period for one month and then a light one or they may have two heavy periods and then one light one also.

A soccer player sprinting down the field demonstrates which form of energy

kinetic

What the the two main states of mechanical energy

Potential energy and Kinetic energy

A person running around a track demonstrates energy

kinetic

If you want to lift a 5-kg box to a height of 1 meters how much work must be done

98 j

When a deck of cards slips out of your hands and falls to the ground gravity does work on it

True - apex =)

When only mechanical energy acts on an object what is conserved

gravity

In an isolated system, two cars, each with a mass of 1,000 kg, collide Car 1 is initially at rest, while Car 2 was moving at 10 m/s What is the magnitude of their combined momentum after the collisi

10,000 kg-m/s

What is an example of conditions not producing work

the momentum must be greater than the force . the force may be very large

How much work must be done on a 5 kg snowboard to increase its speed from 2 ms to 4 ms

work=mass*speed,5*2=10

How were slaves affected by the new republic

Some northern states made slavery against the law.

How does the output work compare to the input work for a machine that has an efficiency equal to 100 percent

If a machine has 100 percent efficiency, the output work = the input work. That's actually basically what the efficiency of a machine is - output work / input work * 100.

How does the density of a liquid compare with the density of a solid

That depends on the liquid and the solid. Liquid mercury has a very high density. Liquid gasoline has a very low density. At the melting point the density of a liquid and a solid are almost the same.

Which of the following is considered to be a conservative force

Air resistance

How much must be done for a 100-kg car to increase its speed from 1ms to 2ms

10kg

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