Thanks for responding so I can equate the loss in potential energy with the gain in kinetic energy?
I am just going to look at the formulas for this now
Homework Statement
Two solid copper spheres of radii 1 and 2 cm are released from rest in free space, their centers being 20 cm apart. Estimate the velocity with which they collide
Homework Equations
density =mass/volume
F=GMm/r^2
The Attempt at a Solution
Find mass of each from density of...
I have just made the connection with my data sheet and the formula BANcos(theta)
Then the angle between a normal to the coil and the field with give the necessary change of sign on rotation through 180 degrees.
Is there any way of simply explaining why the area that the field lines cut changes...
Homework Statement
A circular coil of diameter 24 mm has 40 turns. The coil is placed in a uniform magnetic field of flux density 85 mT with its plane perpendicular to the field lines.
a) i Calculate the area of the coil
ii The flux linkage through the coil.
b) The coil was reversed in a...