In a power station 900 MJ of thermal energy were released by burning natural gas. Only 405 MJ was generated. Calculate the efficiency of this energy transfer.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

Explain the consequences of this addiction to the brain tissue

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader