2,000 kg car moving at 5 m/sec to east collides with 6,000 kg car moving 3 m/sec to west. if cars couple together, what is their velocity?

Distinguish between a transverse wave and a longitudinal wave.

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.