Answer:
Check the explanation
Explanation:
(31)
induced EMF depends on change in angle

Answer is option (b) i.e.,rotating the loop about an axis perpendicular to the field lines
(31) True
Induced emf. 
"You should apply a force with your hand as close to the axis of rotation as possible."
Answer:
when resources remain the same
Explanation:
The capacity of an area will change if the available resources remain the same, especially if the population is changing.
Answer:
8.6 m/s
Explanation:
The components of the initial velocity of the ball can be found by using the equations:

where
is the horizontal component
is the vertical component
v is the magnitude of the velocity
is the angle above the horizontal
Substituting:
v = 15 m/s

We find:
