12 points , just need help with this question

a sonic boom is a loud boom that breaks the sound barrier

explanation:

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

80cm/s.

24cm/s.

53.3cm/s.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;