Advantage of fixed pulley?
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When you kick a football, why does it stop?
Why is mercury used in thermometers rather than water?
What is astrophysics?
Do radio-waves go in straight line ?
Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?
Can a solid and liquid together be possible?
How can the presence of an element in a distant star detected ?
Mercury is a better barometric fluid than water because?
When sound waves travel from air to water, what happens to its frequency?
Explain the index of refraction of air?
what does quantity of matter in an object denote
Physicists most commonly call a mass moving in a straight line path as having: