Asolid sphere with a radius of 50.0 cm has a total positive charge of 40.0 μc uniformly distributed in its volume. calculate the magnitude of the electric field 10.0 cm away from the center of the sphere:

a

1.8e+008 n/c

b

3.2e+004 n/c

c

1.44e+010 n/c

d

2.880e+005 n/c

One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.