Kinetic
which has more a 0.0014 bullet travel @ 396m/'s or 7.1 10^7kg ocean liner travel @ 13m/'s (25 knots)?

The ocean liner

Explanation:

Given that,

The mass of the bullet, m = 0.0014 Kg

The velocity of the bullet, v = 396 m/s

The mass of the ocean liner, M = 7.1 x 10⁷ Kg

The velocity of the ocean liner, V = 13 m/s

The kinetic energy is given by the formula,

                                 K.E = 1/2 mv²

1) The kinetic energy of the bullet,  

                                  K.E = 1/2 x 0.0014 x 396²

                                         = 109.775 J

2) The kinetic energy of the ocean liner,

                                 K.E = 1/2 x 7.1 x 10⁷ x 13²

                                        = 6 x 10⁹ J

Hence, the ocean liner has more kinetic energy.                        

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.