Everyday Physics
Force, light, sound and energy: the basics you meet every day.
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The questions
What is the unit of force?
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The right answer: Newton
About how fast does light travel in a vacuum?
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The right answer: 300,000 km/s
Which force pulls objects towards the Earth?
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The right answer: Gravity
What is the unit of electric current?
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The right answer: Ampere
At what temperature in Celsius does water freeze?
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The right answer: 0
Who set out the three laws of motion?
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The right answer: Isaac Newton
Through which of these can sound not travel?
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The right answer: A vacuum
What is the unit of energy?
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The right answer: Joule
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