The lowest note on a piano is 27,5 Hz. If strings with V = 84,7 m/s are used, how long should the piano string be?
(Unit = m)

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative