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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for power?
💡 Hint: Remember, power involves work done over time.
Question 2
Easy
How many watts are in 1 Joule per second?
💡 Hint: Think about the definition of a watt.
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 is the formula for calculating power?
- P = E/t
- P = W/t
- P = t/W
💡 Hint: Focus on work done and time.
Question 2
True or False: 1 Watt is equal to 1 joule per second.
- True
- False
💡 Hint: Think about how power is measured.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A battery-powered device operates at 250 W for 4 hours. How much energy does it consume in joules?
💡 Hint: Convert hours to seconds before multiplying.
Question 2
If a person can lift a 50 kg box 2 meters in 4 seconds, what is the power exerted? (g = 9.81 m/s²)
💡 Hint: Calculate the work done first using W = F * d, then find power.
Challenge and get performance evaluation