At one point in the circuit, there is an LED and a resistor in parallel with one another. If you measure the voltage drop across
1 answer:
You might be interested in
The fundamental frequency on a vibrating string is given by:
where
L is the length of the string
T is the tension
is the mass per unit length of the string
Keeping this equation in mind, we can now answer the various parts of the question:
(a) The fundamental frequency will halve
In this case, the length of the string is doubled:
L' = 2L
Substituting into the expression of the fundamental frequency, we find the new frequency:
So, the fundamental frequency will halve.
(b) the fundamental frequency will decrease by a factor
In this case, the mass per unit length is doubled:
Substituting into the expression of the fundamental frequency, we find the new frequency:
So, the fundamental frequency will decrease by a factor .
(c) the fundamental frequency will increase by a factor
In this case, the tension is doubled:
Substituting into the expression of the fundamental frequency, we find the new frequency:
So, the fundamental frequency will increase by a factor .
Answer:
A) If the paintball stops completely the magnitude of the change in the paintball’s momentum is
B) If the paintball bounces off its target and afterward moves in the opposite direction with the same speed, the change in the paintball’s momentum is
C) A paintball bouncing off your skin in the opposite direction with the same speed hurts more than a paintball exploding upon your skin because of the strength exerted is twice than if it explodes.
Explanation:
Hi
A) We use the formula of momentum , so we have
B) We use the same formula above, then due we have a change of direction at the same speed, therefore the change in the momentum is the double so
.
C) The average strength of the force an object exerts during impact is determined by the amount the object’s momentum changes. therefore
, as we don't have any data about the impact time but we know momentum is twice, time does no matter and strength is twice too.