Electric and Gravitational Forces

The video tutorial explains how to calculate the electric and gravitational forces between two protons separated by a femtometer. It uses Coulomb's law to determine the electric force, which is repulsive due to the positive charges of the protons. The gravitational force is calculated using Newton's law of universal gravitation, resulting in a much smaller attractive force. The tutorial concludes that the gravitational force is negligible compared to the electric force, indicating that it cannot be the reason for nuclear stability.

What is the primary focus of the problem discussed in the video?

• Calculating the speed of light

• Understanding the concept of time dilation

• Determining the size of electric and gravitational forces at a femtometer

• Exploring the properties of black holes

Which law is used to calculate the electric force between two protons?

• Hooke's Law

• Coulomb's Law

• Ohm's Law

• Newton's Law of Gravitation

What is the value of the constant 1 over 4 PI epsilon naught used in the electric force calculation?

• 6.67 x 10^-11

• 1.60 x 10^-19

• 8.99 x 10^9

• 3.00 x 10^8

What is the charge of a proton used in the electric force calculation?

• 1.60 x 10^-19 C

• 6.02 x 10^23

• 1.67 x 10^-27 kg

• 9.81 m/s^2

Which law is applied to calculate the gravitational force between two protons?

• Archimedes' Principle

• Kepler's Laws

• Newton's Law of Gravitation

• Coulomb's Law

What is the mass of a proton used in the gravitational force calculation?

• 1.67 x 10^-27 kg

• 6.67 x 10^-11

• 1.60 x 10^-19 C

• 9.81 m/s^2

How does the gravitational force between protons compare to the electric force?

• It is equal

• It is much smaller

• It is slightly larger

• It is much larger

Why can't gravitational attraction be the reason for nuclear stability?

• Because it only acts at large distances

• Because it is not present in protons

• Because it is a repulsive force

• Because it is much weaker than the electric force