Question 4 A coil of wire of 10 turns has across sectional area of 0.08 m2

. What is the total magnetic flux through

the coil if a magnetic field of 0.4T passes through the coil;

(a) perpendicular to the plane of the coil.

(b) at 20oto the plane of the coil

(c) by what percentage has the answer in (b) differed from the one in (a)?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?