When an object is stationary, all of the forces acting on it are balanced

Which of the following best describes why your rocket could never reach the speed of light? Which of the following best describes why your rocket could never reach the speed of light? a.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

The theory that the Earth's crust and part of the upper mantle are broken into sections that move on a fluid layer of the mantle is called ... A. Continental Drift B. Wegener's Theory C. Sea Floor Spreading D. Plate Tectonics

Why can a liquid change to take the shape of its container but not expand to fill the container itself?

If the frequency of a sound wave is 250 hertz and it's wavelength is 1.36 m, what is the waves velocity? A) 250 m/s B) 340 m/s C) 200 m/s D) 120 m/s

Which property of coal makes it ideal for use in a power plant? Check all that apply. It burns easily. It makes ash. It is renewable. It produces a lot of energy. It contains mercury.

Bob is coming toward you at a speed of 75 km/hr. You throw a baseball in his direction at 75 km/hr. What does he see the ball doing?

Give 3 examples of something with potential energy.

A graph that shows that the pressure of a gas varies inversely with its volume under constant temperature demonstrates A. The pressure law B. The density law C. Charle's law D. Boyle's law

5. Why should the electrons be placed separate from each other (why not together) ?