Answer:
Explanation:
Recall that the formula for an inductance (L) for coil on N turns, are A and current I is given by:
Then, for the first coil we have;
and for coil 2 we have:
then, the quotient L1/L2 can be written as:
You are running late for class and are still in the hallway when the bell rings. The tardy bell is right outside your classroom
1 answer:
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Answer:
C) 19 m/s
Explanation:
The motion of the cannonball is a projectile motion, which consists of 2 independent motions:
- A uniform motion (constant velocity) along the horizontal direction
- A uniformly accelerated motion (constant acceleration) along the vertical direction
As a result, we have the following:
- The horizontal velocity of the cannonball remains constant during the motion, and it is given by
where
u = 25 m/s is the initial velocity
is the angle
Substituting,
- The vertical velocity keeps changing during the motion due to the acceleration of gravity. However, at the top of the trajectory, the vertical velocity is zero:
This means that at the top of its path, the cannonball has only horizontal velocity, so its velocity is
C) 19 m/s