According to the nebular model, how were planets formed?

14. Which of the following is an example of changing acceleration? a. A car stopped at a red light. b. A boat sailing west at 5 knots. c. A train traveling 65 miles per hour south. d. A man jogging 3 meters/second along a winding path.

A steel safe with mass M falls onto a concrete floor. Just before hitting the floor, its speed is vi. It hits the floor without rebounding, and ends up being d shorter than before.

A centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers 140°.

Which has a greater momentum? A 1200kg car traveling at 30m/s or a 2000kg truck traveling at 20m/s

In recent years, astronomers have found planets orbiting nearby stars that are quite different from planets in our solar system. Kepler-12b, has a diameter that is 1.7 times that of Jupiter (RJupiter = 6.99 * 107 m), but a mass that is only 0.

Which of the following is a supersonic speed? Mach 0.005 Mach 0.05 Mach 0.5 Mach 5

How do you solve this equation ___ Al + ___ Na1 O1 H1 - ___Na3 Al1 O3 + __ H2

A student pulls a 60 Newton sled with a force having a magnitude of 20 Newton's. What is the magnitude of the force that the sled exerts on the student

The four basic properties of lighting are

Which of the following is the correct SI unit to use in measuring the mass of a boulder A. ounces B. tons C. kilograms D. pounds (I'm sorry If I didn't pick the right subject!)