How much net work is required to accelerate a 1000kg car from 20m/s to 30m/s.
What will be an ideal response?
Ans: 2.5×105J
Physics & Space Science
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Which is the strongest of the fundamental forces in the universe?
A) strong force B) weak force C) electromagnetic force D) gravitational force E) All four forces have the same strength.
Physics & Space Science
Spacetime is curved by
A) mass. B) the force of gravity. C) quantum fluctuations. D) the vacuum force.
Physics & Space Science
If a star rises about 9 PM tonight, and with the sidereal day being four minutes less than the solar one, then in a month it will rise about 7 PM
Indicate whether the statement is true or false
Physics & Space Science
Fossil evidence points to the presence of life on Earth as far back as ________ ago.
A) almost 4 billion years B) about 2.0 billion years C) about 545 million years D) about 65 million years
Physics & Space Science