Which statement below is false? a) weight depends on the force of gravity. b) mass is the amount of matter in an object. c) mass is a constant no matter where you are located. d) weight is a constant no matter where you are located.

What is the relationship between the wavelength of a wave and it's energy?

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?