1. Suppose you have a metal bar. Its mass is 57.9g and its volume is 3cm'. What is its
density?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

The least penetrating form of radiation is

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic