A wave that transfers energy through vibrating In a medium
Answer: Liquid
“A substance will take on the shape of an open container if it is a Liquid. Explanation: The major state of matter are solid, liquid and gas. Liquid usually have a definite volume.”
First you find the least common denominator of the two. Then add or subtract and simplify
The only statement on the options that says true about density is:
> The density of an object determines whether it will sink or float.
Why?
Density is a physical property of an object.
Density is not derived as a unit of measure. It is derived from 2 fundamental units: kg and m.
The Density of an object is not constant.
Density is calculated by dividing the mass by the volume of an object.
Answer:
24 kg m/s
Explanation:
The change in momentum of the wrench is given by:
where
is its final momentum
is its initial momentum
At the beginning, the wrench is at rest together with the astronaut, so its momentum is zero:
After it is launched, its momentum becomes
where
m = 2.0 kg is its mass
v = 12 m/s is its velocity (taking the direction of the wrench motion as positive)
Substituting,
So, the wrench's change in momentum is