Question 1 of 10 Why might a scientist use a physical model of a plant cell instead of studying
a cell directly?
A. It is not known how a plant cell works.
B. A model of a cell is easier to manipulate.
C. The cell moves too fast to study directly.
D. A model cell has fewer details than a real cell.
SUBMIT

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

How is an electron dot structure used to represent a covalent bond?

Can someone me with my physics questions? i need correct answers only!