Calculate the period of a ball tied to a string of length 0.504 m making 3.9 revolutions every second. answer in units of s. your answer must be within ± 2.0% 004 (part 2 of 2) 10.0 points calculate the speed of the ball. answer in units of m/s. your answer must be within ± 2.0%

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to