This is basically Michael Faraday's law and this is known as electromagnetic induction
That's all I know
Answer:
Explanation:
I suppose it has to do with the way the diagram is drawn. The heat does not reflect which makes both A and B incorrect.
C would have nothing to do with either reflection or refraction.
That only leaves D which is the answer.
Answer:
vB = 12 m/s
W = 36 J
Explanation:
Potential energy converts to kinetic energy
½mv² = mgh
v = √(2gh)
vB = √(2(9.8)(7.1 - 0) = 11.796609... m/s
W = mg(hA) - mg(hB) = 0.8(9.8)(7.1 - 2.5) = 36.064 J
Answer:
The moment of inertia is 0.7500 kg-m².
Explanation:
Given that,
Mass = 2.2 kg
Distance = 0.49 m
If the length is 1.1 m
We need to calculate the moment of inertia
Using formula of moment of inertia

Where, m = mass of rod
l = length of rod
x = distance from its center
Put the value into the formula


Hence, The moment of inertia is 0.7500 kg-m².
Answer:
(a) Total time = 105.5 sec
(b)average speed = 31.26 m/sec
Explanation:
We have given that three-wheeled car starts from rest that initial velocity u = 0 m/sec
Final velocity = 35 m/sec
Acceleration 
According to first law of motion we know that v = u+at
So 
t = 17.5 sec
After this car travels 83 sec at a constant speed and after that it takes 5 sec additional time to stop
(a) So total time in which car is in motion = 17.5+83+5 = 105.5 sec
(b) Total distance traveled during first 17.5 sec

Distance traveled in 83 sec with with velocity of 35 m/sec = 
For next 5 second
Initial velocity u = 35 m/sec
Final velocity = 0 as finally car stops
So 
Distance traveled 
So total distance traveled = 306.25+2905+87.5 = 3298.75 m
Total time = 105.5 sec
So average speed 