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Science Clinic => Physics => Topic started by: rayancarla1 on Aug 6, 2020

Title: Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rather ...
Post by: rayancarla1 on Aug 6, 2020

Question 1

An alpha particle (charge = +2e) is sent at high speed toward a gold nucleus (charge +79e). What is the electrical force acting on the alpha particle when it is at a distance of 2 × 10⁻¹⁴ m away from the gold nucleus? (e = 1.6 × 10⁻¹⁹ C)

Question 2

Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rather than by gravitation. What electrical charges −Q on the Earth and +Q on the Moon are necessary to hold the Moon in a circular orbit with a period of 27.3 days? The Earth-Moon distance is 384 000 km and the mass of the Moon is 7.35 × 10²² kg.

Title: Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rather ...
Post by: enass on Aug 6, 2020

Answer 1

91 N

Answer 2

Q = 5.73 × 10¹³ C

Title: Re: Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rat
Post by: habeba mostafa on Apr 8, 2022

thank uou