A hydrogen atom is the simplest element on the periodic table. It consists of one proton (q = 1.6 1019C) in its nucleus and one electron q = -1.6 1019C) in its orbital cloud. If the two subatomic particles are 5.3 1011m apart, what are the magnitude and description of the electrostatic force between them?

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.