Why can you get a shock if you touch a metal doorknob after walking across a wool carpet? (1 Point) You have gained electrons; t
1 answer:
You might be interested in
Answer:
Magnitude of induced emf will be
Explanation:
We have given radius of the circular loop r = 19.7 cm = 0.197 m
So area of the circular loop
It is given that magnetic field is changing as
Emf induced in the circular loop is equal to
So emf induced will be equal to
So magnitude of induced emf will be
Answer:
b. The side the boy is sitting on will tilt downward
Explanation:
Initially, the seesaw is balanced because the torque exerted by the boy is equal to the torque exerted by the girl:
where
Wb is the weight of the boy
db is the distance of the boy from the pivot
Wg is the weight of the girl
dg is the distance of the girl from the pivot
When the boy moves backward, the distance of the boy from the pivot ( increases, therefore the torques are no longer balanced: the torque exerted by the boy will be larger, and therefore the side of the boy will tilt downward.