Maximo is helping a librarian return books to the shelves where they belong. He picks up books from the librarian's desk. as shown in Figure A. He then carries
them to the shelves, as shown in Figure B. In which figure does Colin do work?
Direction of
movement
Direction of
movement
A. Lifting books
B. Carrying books
Figure A
Hi

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c