Physics Past Questions and Answers

A binary operation \(\otimes\) defined on the set of integers is such that m \(\otimes\) n = m + n + mn for all integers m and n. Find the inverse of -5 under this operation, if the identity element is 0

A progressive wave is represented by \( y = 10 \text{Sin} (1000\pi t - \frac{\pi x}{34}) \) . two layers of the wave separated by 153cm have a phase difference of

Two cars moving in the same direction have speeds of 100 kmh<sup style='font-size: smaller;'>-1</sup> and 130 kmh<sup style='font-size: smaller;'>-1</sup> what is the velocity of the faster car as measured by an observer in the slower car?

A stone and a feather are dropped from the same height above the earth surface. ignoring air resistance, which of the following is correct?

A car moves with an initial velocity of 25 ms<sup style='font-size: smaller;'>-1</sup> and reaches a velocity of 45 ms<sup style='font-size: smaller;'>-1</sup> in 10s. what is the acceleration of the car?