The table compares the number of subatomic particles in two atoms. Subatomic Particle Comparison Atom Protons Electrons Neutrons
Q 11 11 12 R 11 10 12

Which of the following is true about the two atoms?
a) They have the same charge and same mass.
b) They have the same charge but different masses.
c) They have different charges but the same mass.
d)They have different charges and different masses.

c) They have different charges but the same mass.

Explanation:

The atoms have a different charge from each other because one atom has one more electron than the other. They have the same mass because the number of protons and neutrons are the same in both atoms.

b is the correct

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds