Aparticle with charge q and kinetic energy k travels in a uniform magnetic field of magnitude b. if the particle moves in a circular path of radius r, find expressions for each of the following. (use any variable or symbol stated above as necessary.)

Explanation:

In this question it is assumed that expressions for speed and mass are asked

Kinetic energy

since the charge moving in a circle

So we can write

so, the expression for speed

now to obtain the expression for mass

Force F = m×a

and so solving for m we get:

plug expression for v back into KE equation

now rearranging the above equation we get

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.