Answer:
Applications of Avogadro's hypothesis:
In explaining Gay Lussac's law of gaseous volumes.
In determining the atomicity of gasses.
In determining the molecular formula of a gas.
In establishing the relationship between relative molecular mass and vapor density.
Explanation:
Molly could increase her heart rate by turning around and jogging backwards, by jogging on her hands instead of her feet, or by continuing to jog normally but increasing the speed of the treadmill.
Answer:
All are not true.
Explanation:
Sound needs medium to travel.
sound speed is fastest in solids.
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
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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.
<u>Work done = (force) times (distance)</u>
If the force doesn't move, then the distance is zero, and the work done is zero.
