a car whose initial speed is 30 seconds m / s slows uniformly to a stop in 5.00 seconds what was the cars displacement
1 answer:
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By definition, we have that the work done is given by:
Where,
F: force in the direction of displacement
d: displaced distance
Substituting values we have:
Then, the power is given by:
Where,
t: time
Substituting values we have:
Answer:
The work done on the box is 100 Nm, and the power is 20 Nm/s.
Answer:
Explanation:
Magnetic field due to a long solenoid at the center is given by
here we know that
N = 300
L = 30 cm
i = 12 A
now magnetic field is given as
Now magnetic flux through the disc is given as