Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the speed of light in a vacuum?
💡 Hint: This is a constant fundamental to the theory.
Question 2
Easy
State the two postulates of Einstein's Special Theory of Relativity.
💡 Hint: Think about how different observers perceive light.
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 time dilation state?
💡 Hint: Think about how objects moving at high speeds behave.
Question 2
True or False: The length of an object moving at relativistic speeds appears longer to an observer at rest compared to its proper length.
- True
- False
💡 Hint: Recall the expression for length contraction.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A particle moving at 0.99c decays with a proper lifetime of 5 microseconds. How long does it take to decay in the laboratory frame?
💡 Hint: Remember the formula for time dilation.
Question 2
If an observer measures the length of a spaceship moving at 0.8c to be 100 m, what would be its proper length?
💡 Hint: Use the length contraction relationship to find the original length.
Challenge and get performance evaluation