Answer:
I(current)=0.25A
R (resistance)=960ohms
Explanation:
1.)
P=60W
V=240V
I=?
Power= Current× Potential difference
P=IV
substitute 60 for P and 240 for V
60=I×240
I=60÷240
I=0.25A
Therefore, I=0.25A
2.) V=IR
Substitute 240 for V and 0.25 for I
240=0.25×R
R=240÷0.25
R=960W
Therefore, R=960W
<span>Answer:
As the ray is travelling from denser to rarer medium,
Therefore sin i / sin r = 1 / RI
= Sin 90 / Sin i = RI (Reciprocal)(Sin 90 because for critical angle Sin r= 90)
= 1 / Sin i = 3/2
= Sin i = 0.667
Now converting this value to degrees
It becomes Sin 42.
Therefore the critical angle is 42.
42 degrees = 0.733038286 radians</span>
Intensity. They relate the intensity of a pressure wave to a normal or standard pressure
Answer:
Decreases.
Explanation:
When an object with potential energy falls to the ground, its potential energy decreases and kinetic energy increases.