The type of lens that spreads out parallel light is a

What is the total number of atoms in the following formula? CaBr2 04

Explain how a rocket can propel itself using Newton's third law.

Atoms seldom exist as independent particles in nature because ... A) as single particles, most atoms have low potential energy B) their electronegativity is much lower when they combine with other atoms C) atoms are more stable when they combine

If a wave is traveling at a constant speed, and the frequency decreases, what would happen to the wavelength? A) It would increase B) It would decrease C) It would remain constant D) It would drop to zero

An electromagnetic wave in a vacuum has a wavelength of 0.032 m. What is its frequency?

You are in a hot air balloon, 350 m above the flat Texas plains. You look out toward the horizon. How far out can you see--that is, how far is your horizon? The Earth's radius is about 6400 km.

You and your housemate have an argument over the cost of the electric bill. You want to turn off the outside porch light before going to bed each night.

Work is a product of A force and distance B force and heat energy C cause and heat energy D cause and effect

An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the maximum pressure on the submarine hull?

Why cooking pans don't have have metal handles?