2. A step-up transformer used in an automobile has a potential difference across the primary of 12 V and a potential difference across the secondary of
2.0 x 104 V. If the number of turns in the primary is 21, what is the number
of turns in the secondary?​

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.