Answer:
Sound waves are pushed closer together, decreasing wavelength
and increasing frequency.
Answer:
I'm soo soo sorry but The pdf can't seem to be downloaded
The net force on the barge is 8000 N
Explanation:
In order to find the net force on the badge, we have to use the rules of vector addition, since force is a vector quantity.
In this problem, we have two forces:
- The force of tugboat A,
, acting in a certain direction - The force of tugboat B,
, also acting in the same direction
Since the two forces act in the same direction, this means that we can simply add their magnitudes to find the net combined force on the barge. Therefore, we get
and the direction is the same as the direction of the two forces.
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Answer:
50ohms
Explanation:
If the power in an electric circuit varies inversely with the resistance, it can expressed as P = k/R where;
P is the power, R is the resistance and k is the constant of proportionality.
From the formula, k = PR
k = P1R1 = P2R2...(1)
Given P1 = 2200watts, R1 = 25ohms, P2 = 1100watts R2 = ?
From equation (1);
R2 = P1R1/P2
R2 = 2200×25/1100
R2 = 50ohms
The resistance when the power is 1100watts is 50ohms.
This shows that as the power is decreasing, the resistance is increasing.
