Answer:
440J
Explanation:
First, let us find the <u>weight </u>of the barbell.
The formula to find the weight is :
W = m × g
Here,
m ⇒ mass ⇒ 20 kg
g ⇒ acceleration of gravity
<u>Let us find it now.</u>
W = m × g
W = 20 kg × 10 ms⁻²
W = 200N
And now let us find<u> the work done by this weight lifter.</u>
Work = Force × Displacement
<u>Let us find it now.</u>
Work = Force × Displacement
= 200N × 2.2m
=<u> 440J</u>
Answer: Volume
Explanation: Volume is the amount of space matter takes up. All matter takes up a certain amount of space. Volume is used in mathematics and science all the time to describe the size of a particular object.
An example of volume would be finding the volume of a cube with a length of 30 feet.
Since the length, width, and height of a cube are all equal, we can find the volume of a cube by multiplying the side × side × side or S³.
(30 ft)³
Volume = 27,000 ft³.
C. slate cause bedrocks are the general medium for a seismic wave ,the conductivity depends on temp,density,element and tensition . generally its faster the densier, heavier , and more tense and what the element is.