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This is an MCQ-based quiz on the topic of MODERN PHYSICS: Special theory relativity numerical.
This set of MCQs helps you brush up on the important physics topics and prepare you to dive into skill practice and expand your knowledge.
In a nuclear plant, 10^17 J of energy is available from mass conversion. How much mass was lost in kg?
0.1
1
10
100
The kinetic energy of a proton is 80% of its total energy. What is the speed of the proton?
0.02
0.87
0.98
1.0
The atomic bomb that was dropped on Nagasaki in 1945 killed 140,000 people, helping to end World War II on the next day. It released energy equivalent to that of 20,000 tons of TNT explosive. How much mass was converted to energy when this took place? (1000 tons of TNT = 4.3 * 10^12 J) Incidentally, modern H-bombs have energy yields 1000 times as much!
1
101
100
1000
How much energy _______ *10^(17) would be released if 2.0 kg of material was lost during a reaction?
1.8
1.5
6.0
4.7
During a reaction, 1.7 * 10^(-4) J of energy is released. What change of mass ______ *10^(-21) would cause this?
5.1
1.5
4.8
1.9
During a reaction, an element loses 4.8 * 10^(-28) kg of mass. How much energy ________ * 10^(-36) (in Joules) is released?
4.3
1.4
1.6
5.3
What is the momentum in kg*m/s of a proton when it is moving with a speed of 0.60c in 10^(-19)?
1.2
1.5
3.0
3.8
If the velocity of your spaceship goes from 0.3 c to 0.6 c, then your mass will increase by
19
38
100
200
What is the speed of a proton if its mass is twice its rest mass?
0.50
0.68
0.73
0.87
An electron is traveling at 0.85c. What is its mass ______ * 10^-30? (The rest mass is 9.11 * 10^(-31) kg.)
1.4
7.2
1.7
2.4
