When an object is hung from the spring, the length of the spring is 19.2cm. What is the weight if the object?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

If a star is moving toward earth, it is

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc