If you have a 450 micrograms sample of gold, but you only have a mass balance that measures in decigrams. Convert the amount of gold you need to decigrams by comparing the exponents.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

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