Answer:
magnitude of the induced emf in the coil is 0.0153 V
Explanation:
Given data
no of turns = 20
area = 0.0015 m²
magnitude B1 = 4.91 T/s
magnitude B2 = 5.42 T/s
to find out
the magnitude of the induced emf in the coil
solution
we know here
emf = -n A d∅ /dt
so here n = 20 and
A = 0.0015
and d∅ = B2 - B1 = 5.42 - 4.91
d∅ = 0.51 T and dt at 1 sec
so put all value
emf = -n A d∅ /dt
emf = -20 (0.0015) 0.51 / 1
emf = - 0.0153
so magnitude of the induced emf in the coil is 0.0153 V
Answer:
No, it does not.
Explanation:
According to the Law of Gravitation, something going down has more kinetic energy than something going up because it attracts pressure from around it when going down. When it goes up, it has less gravitational force and inertia also stops the ball from rolling upward. Therefore, without the amount of kinetic energy, it will not have the same amount of acceleration.
Answer:
Assuming you mean how they work,
Explanation:
Electromagnets work by wrapping the wire around an iron core and attaching it to an electric charge.
The mass of a dwarf planet.
<u>Answer:</u>
a) 480 000 J
b) 43 m/s
<u>Explanation:</u>
a)
To calculate the work done by the engine, we can use the following formula:
.
⇒
⇒
b)
We know that the work done by the propeller was converted into motion of the sled, which means the propeller provided the sled with kinetic energy.
∴ work done by propeller = kinetic energy gained by sled
⇒
⇒
⇒
⇒
⇒
This means that its velocity after 40 m was 43 m/s.