PHYSICS MIDDLE SCHOOL

Contrast situations where work is done with different amounts of force to situations where no work is done such as standing still???

Answers

Answer 1
Answer: Picking up a sheet of paper . . . work done with small force
Picking up a glass of water . . . work done with moderate force
Picking up a huge boulder . . . work done with a great tremendous force
=================================
Standing still . . .
Holding your tongue out as far as it will go . . .
Holding your arm over your head for 3 days . . .
Holding a huge boulder motionless over your head . . .
Pushing on a brick wall . . .
Pushing as hard as you can against a truck with the wheels locked . . .
. . . . . No work done at all, because the force doesn't move through a distance.

Work done = (force) times (distance)

If the force doesn't move, then the distance is zero, and the work done is zero.

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jenny measures the outside temperature as 16 degrees celcius,61 degrees Fahrenheit. she observes precipitation falling from the clouds in a solid form.what type of precipitation is jenny most likely observing. A)hail B)rain C)sleet D)snow

Answers

A.hail is a reasonable answer 
A. The temperature is too high for snow or sleet to fall, because both need temperatures lower that 32 degrees F. Jennifer observed precipitation falling from the clouds in a SOLID form, meaning rain is out of the question.

What is the structure of a magnet?

Answers

The structure of a magnet is iron because a magnet is a piece of iron.

Which one of the following is not a safety rule in the laboratory. a. To sit on a stool
b. To follow instructions
c. To wear shoes with hard soles
d. Handling apparatus​

Answers

Answer:

C. To wear shoes with hard soles​

Explanation:

As volume increases mass will__

Answers

If you're working with a solid or a liquid, the only way to increase volume
is to add more solid or liquid, so the mass must also increase.
(I don't want to get into temperature and confuse you.)

Not so with a gas.  If you want to increase the volume of a jar of gas,
all you have to do is pipe it into a bigger jar.  Gas always expands
to fill whatever you put it in.  So if you're working with a gas, you can
increase the volume with no change in the mass.

Which statement is false?O Preparations for future situations are helpful to avoid pressured situations.
Once you reach adulthood, you will not experience peer pressure.
Peer pressure is often thought of in negative terms even though it can be positive.

Answers

Answer:

Once you reach adulthood, you will not experience peer pressure.

Explanation:

We tend to believe that self-control comes from within, but many of our attitudes depend as much on friends and family as on ourselves. That's because at any stage of our life (even the adult stage) our friends and our family have the power to influence us, sometimes that influence is good and sometimes bad, it's up to us to reason about them.

The people around us have the power to make us fat, consume more alcohol, worry less about the environment and expose ourselves to the sun without proper protection, among many other things.

It is not simply about peer pressure, where you deliberately act in a certain way to suit the group. It is, in fact, largely an unconscious attitude. Without your awareness, your brain is constantly picking up cues from people around you to dictate your behavior. And the consequences can be serious.

Answer:

its B :)

Explanation:

All the bats living in a cave form a _____ of bats in the cave ecosystem.

Answers

All the bats living in a cave form a __colony__of bats in the cave ecosystem.

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