Which two statements are true about redox reactions? A.
They are single-replacement reactions.
B.
An acid gains an electron lost by a base.
C.
Electrons are both gained and lost.
D.
All types of reactions are redox reactions.

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?