3. You turn on the motor in problem 2 and it pulls the weight up 79 cm in 2.5 seconds. a. What is the total amount of mechanical energy expended by the motor in pulling up the weight

Texture and composition are different because they are not the same aspect. texture has to do with feel and so on, where as composition is the chemical makeup which you cant touch like you can texture.

Hypothesis. why don’t you know this? i learned this stuff in like 5th grade

A. to determine if humans can explore mars safely

If element x has 21 protons, element x has 21 electrons