A hypothesis is an educated guess. It refers to a theory you have based on some sort of evidence you collected or noticed. It is not fact and can sometimes be proven wrong. A law would refer to a scientific fact that has been proven correct and is a fact about the subject.
Maximum speed acquired by the block is 1.32 m/s
<u>Explanation:</u>
Given-
spring constant, k = 291 N/m
distance, x = 11cm = 0.11m
Mass of the block, m = 2 kg
Maximum speed of the block, Vmax = ?
We know,
Period of its motion, ω = √k/m
ω = √291/2 N/mkg
ω = 12.06 rad/s
Maximum speed, Vmax = ωx
Vmax = 12.06 rad/s X 0.11m
Vmax = 1.32 m/s
Therefore, maximum speed acquired by the block is 1.32 m/s
To solve this problem it is necessary to apply the concepts related to rate of thermal conduction

The letter Q represents the amount of heat transferred in a time t, k is the thermal conductivity constant for the material, A is the cross sectional area of the material transferring heat,
, T is the difference in temperature between one side of the material and the other, and d is the thickness of the material.
The change made between glass and air would be determined by:





There are two layers of Glass and one layer of Air so the total temperature would be given as,




Finally the rate of heat flow through this windows is given as,



Therefore the correct answer is D. 180W.