The mass of a substance was found to be 8.2 g. By using the water displacement method the volume was found to be 3.6 cm3. Calculate the density

Which two objects attract each other? A. a proton and an electron B. two electrons C. a proton and a neutron D. two protons

How does an atom lose the extra energy it gains when moving from a higher energy level to a lower one?

The index of refraction for flint glass is 1.5. This means that

A 80 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30∘ from the horizontal, and that of the second is oriented at 60∘ from the horizontal.

What is the main similarity between ""fog"" and frost's poem mending wall?

A negatively charged object is brought near the knob of a negatively charged electroscope. The leaves of the electroscope will ... A) become positively charged B) move closer together C) become neutral D) move farther apart

charged particles from the solar winds ultimately cause ___. a. the earth to maintain it's magnetic field b. the earth to change shape c. the auroras d. strong winds on earth

Suppose that a 710 kg car is traveling at 13 m/s. Its brakes can apply a force of 4000 N. What is the minimum distance required for the car to stop? Make a quantitative force diagram.

What are Nebulae and what are they made of?

That's because helium molecules are not packed together as densely as air molecules are. It is this simple reason that helium balloons float in the air.