Author Question: During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between ... (Read 81 times)

serike · **on:** Jul 29, 2018

During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between the Moon and the Sun.

The Moon has a mass of 7.36 1022 kg; the Earth has a mass of 5.98 1024 kg; and the Sun has a mass of 1.99 1030 kg. The separation between the Moon and the Earth is given by 3.84 108 m; the separation between the Earth and the Sun is given by 1.496 1011 m.
(a) Calculate the force exerted on the Earth by the Moon.
(b) Calculate the force exerted on the Earth by the Sun.
(c) Calculate the net force exerted on the Earth by the Moon and the Sun.

Question 2

When resistors are connected in series,

A)

the same power is dissipated in each one.
B)

the potential difference across each is the same.
C)

the current flowing in each is the same.
D)

More than one of the given answers is true.
E)

None of the given answers are true.

adammoses97 · **Reply #1 on:** Jul 29, 2018

Answer to Question 1

(a) 1.99 1020 N, toward the Moon
(b) 3.55 1022 N, toward the Sun
(c) 3.53 1022 N, toward the Sun

Answer to Question 2

C