Answer: Some jokes make no sense tbh
Explanation:
The molecules spread apart, so they take up more space. Because of this, they are less dense.
This means the density decreases as temperature increases.
Yep that's correct
And transverse waves move perpendicular to the direction of energy transport
<span>Efficiency is the
measure of how efficient a process is. It is used to assess the ability of a
process in avoiding waste energy, materials, money and time in doing a
desirable output. It is calculated as;
Efficiency = useful energy ouput / total energy input</span>
<span>
.742 = useful energy / 200 J
Useful energy = 148.4 J <-----------OPTION B</span>
Answer:
<em>0.25</em>
Explanation:
According to newtons law of motion
\sum F_x = ma
F_f = ma
nR = ma
nmg = ma
ng = a
n = a/g
g is the acceleration due to gravity
Given
a = 2.42m/s²
g = 9.8m/s²
Substitute into the formula;
n = 2.42/9.8
n = 0.25
<em>Hence the coefficient of kinetic friction is 0.25</em>
<em></em>
