How do refracting and reflecting telescopes use convex lenses and mirrors

Henry was given this cool toy for his birthday, he can use it to tell how fast someone is moving at that moment in time. The toy must calculate the person's

Which material is a conductor

Doug wants to get better at volleyball. In order to do this, he has created a list of skills he will need to improve. Which skill should get the most of his attention in order for him to excel at volleyball

What is the station's orbital speed? the radius of earth is 6.37*106m, its mass is 5.98*1024kg.

A toy car has a 1.5-A current, and its internal resistance is 2 ohms. How much voltage does the car require? .75 J 3 J .75 V 3 V

8. How does inertia act on an object that is moving in a circle? A. It causes the object to speed up as it moves. B. It causes the object to move along a straight path. C. It directs the object toward the center of the curve.

The leaves of a tree lose water to the atmosphere via the process of transpiration. A particular tree loses water at the rate of 3 x 10^-8 m^3/s; this water is replenished by the upward flow of sap through vessels in the trunk.

Which of the following is evidence used to support the Big Bang Theory? background radiation increasing distances between galaxies both of the above

Which of the following statements about noncovalent bonding interactions is NOT true? Van der Waals interactions, also known as dispersion forces, are the weakest of the attractive noncovalent bonding interactions.

Does a rising GDP benefit everyone