It's Photoelectric Effect, I just a test with this same question. I am not good for explaining exactly how, but I was right.
Top of the U ramp: potential energy is the highest, while kinetic energy is the lowest
Bottom of the U ramp(aka the curve part): potential energy is the lowest and the kinetic energy is the highest
THEREFORE, PE and KE have an INVERSE RELATIONSHIP.
From that list, the only unit of mass is the "gram".
But that isn't the SI base unit of mass.
The base unit is the kilogram.
Friction, lack/loss of kinetic energy
Answer:
<em>2</em><em>, The spring would compress twice the length of </em><em>. </em>
Explanation:
The Spring force is an application of Hooke's law, and using the law of conservation of energy in a spring system, we can find the relationship between the compression length and velocity.
<h3>Step by Step Calculations</h3>
For a spring system, the conservation of energy can be applied using the formula below;
........................................1
Where k is the spring constant
is the distance
m is the mass and
v is the velocity
We have to make the distance the subject formula to know how it affects the velocity;
.....................................2
from the equation, it shows that the distance () is directly proportional to the velocity (v). This implies that when the distance increases the velocity also increases.
x ∝ v
Therefore when the initial speed is doubled to 2 v it will amount a double increase in the distance which is 2