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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the equation E=mc² represent?
💡 Hint: Think about what the letters E, m, and c stand for.
Question 2
Easy
What is rest energy?
💡 Hint: Remember the formula for rest energy.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does E=mc² illustrate?
- Mass can be created
- Mass and energy are interchangeable
- Energy can be lost
💡 Hint: Consider the meaning behind the equation.
Question 2
True or False: Rest energy is present only when an object is moving.
- True
- False
💡 Hint: Think about what energy means at rest.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A particle has a rest mass of 0.5 kg. If it moves at 0.5c, calculate its total energy.
💡 Hint: Use the mass-energy equivalence formula to solve.
Question 2
If a nuclear reaction converts 0.001 kg of mass into energy, how much energy is released?
💡 Hint: Substitute the mass into the equation E = mc² to find energy.
Challenge and get performance evaluation