The primary mirror in a reflecting telescope is a

plane mirror.

concave mirror.

convex mirror.

As temperature increases, what happens to the density of ocean water? A. changes unpredictably B. decreases C. does not change D. increases

The four inner planets of our solar system are

A muscle builder holds the ends of a masslessrope. At the center of the rope, a 15kg ball is hung. What is the tension in the rope if the angle is4.5degrees?

If your vehicle has a steering wheel lock, should you ever turn off the ignition while it is moving?

In your opinion, what is the greatest environmental concern? what should be done about this?

Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting.

Can you get sunburned through glass?

Which statement about a signal transduction pathway is true? a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell. b.

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C.

Tom stops using a new skin cream for five days to determine if the cream is the cause of a recent rash. What stage of the scientific method is Tom using?