Compute the kinetic energy of a proton (mass 1.67×10−27kg ) using both the nonrelativistic and relativistic expressions for speed of 6.00×107m/s.

Explanation:

Kinetic energy is the energy possessed by a body by virtue of its motion. It is expressed as;

where:

m is the mass of proton

v is the speed

Substitute:

Hence the kinetic energy of a proton is

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

answer: b.

explanation: