Register
Also need help with 20 & 21 please
29.0k views
0 votes
Also need help with 20 & 21 please

Also need help with 20 & 21 please-example-1
User Blake Frederick
by
5.9k points

2 Answers

1 vote
a density is a physical change
User Jeff Olson
by
5.3k points
3 votes
number 20 is B and 21 is C
User Ken Palmer
by
6.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.5m questions

8.6m answers

Other Questions

The___ is composed of Earth's crust and solid upper mantle A. Inner core B outer core C lithosphere D asthenosphere
What is one similarity and one difference between infrasound and ultrasound?
Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the
A stone is dropped from a bridge and hits the pavement below in two seconds. What is the velocity of the stone when it hits the pavement? A. 0.20 m/s B. 19.6 m/s C. 4.9 m/s D. 9.8 m/s
According to Ohm's law, the current in a circuit increases if the __________ increases. The current decreases if the __________ increases.
Link Copied!