A 30-turn coil has a diameter of 11 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.30 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil (in V) if the magnetic field is reduced to zero uniformly in the following times. (a) 0.70 s

The magnitude of induced emf is 0.122 V

Explanation:

Given:

Number of turns

Magnetic field T

Radius of coil m

Change in time sec

For finding the magnitude of induced emf,

According to the faraday's law,

Where magnetic flux

Where area of coil

For finding magnitude we neglect minus sign,

    V

Therefore, the magnitude of induced emf is 0.122 V

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.