A bucket is filled faster at the lower stairthan at the upper stair why

Who discovered black hole radiation?

What affect would using a 12V car battery have on the operation of your circuit? (Do not try this.) What would happen to the current? What would happen to the resistance? Be specific and include appropriate calculations to support your answers.

Elemental chlorine (Cl2) is not a compound because A. it is not a molecule. B. it has only one kind of atom. C. it is a mixture. D. it is inorganic.

Oceans and lakes are part of the? A. Atmosphere B. Hydrosphere C. Lithosphere D. Biosphere

The root word bio means life if you know that biotic means having life what can you guess is one of the meanings of the prefix a

Heat is a kinetic energy. give reason

If you placed a dot on a world map to represent the location of every earthquake in the last 100 years, where would you see earthquake activity most concentrated? why is this so?

If the medium moves perpendicular to the direction of the wave motion, the wave is classified as a longitudinal wave. True or False?

Why might surface mining be less risky for miners than underground mining?

Sometimes the moon appears to have a halo around it at night. Why does this happen? A. It's due to a partial lunar eclipse. B. Moonlight is refracted through ice crystals in high clouds. C.