Technician A is Correct.
You can see this when he says that conductors have more free electrons than insulators. This statement is True.
While Technician B says that, insulators have the lower resistance than conductors. This statement is False.
Answer:
<em>Answer: D. Only R</em>
Explanation:
<u>The Principle Of Conservation Of Mechanical Energy</u>
In the absence of friction, the total mechanical energy is conserved. That means that
Em=U+K is constant, being U the potential energy and K the kinetic energy.
At the top of the path (point Q), Joshua is at rest but his height is at a maximum. Thus his kinetic energy is zero.
At point P, Joshua is at the minimum level (potential energy zero) and his speed is at a maximum.
At point R, Joshua has some height and some speed which means he has both types of energy.
Answer: D. Only R
Answer:
20 N to the left
Explanation:
For the first question, add the two forces as they are acting in the same direction.
So, 8 + 12 = 20 N to the left
Because the speed is constant, then that means it's not accelerating. If it's not accelerating, the force is balanced, so the net force is always zero. The frictional force is the same as the force applied. Which is 85N.
The frequency can be defined as the inverse of the period, that is, it can be expressed as
Here,
T = Period
f = Frequency
For each value we only need to replace the value and do the calculation:
PART A)
T = 0.0166s
PART B)
PART C)
PART D)
