The waste products of combustion leave the internal combustion engine through the: A. crankshaft, B. exhaust valve. C. cylinder. D. intake valve.

Why did the color of the peppered moth change?

Which is a long term climate change

Will give brainliest! Which statement about seismic waves is accurate? Seismic waves have uniform motion within Earth's layers. Seismic waves determine differences in temperature in Earth's layers.

Green light can have a wavelength of 543 nm. the energy of a photon of this light is

One of your classmates, Kevin, is trying to calculate the acceleration due to gravity at the top of Mt. Everest. Looking at an equation sheet, he sees that the acceleration due to gravity is g = G M r 2. For G, he plugs in the gravitational constant.

Faina says that an object cannot be in mechanical equilibrium when only a single force acts on it. do you agree or disagree? explain.

The following measurements were made to determine the density of a material whose value was, occording to the handbook of Chemistry and Physics, 3.75g/ml. Trial #1 4.75 g/ml Trial #2 4.75 g/ml Trial #3 4.74 g/ml

Substances A and B react in a ratio of A + B → AB. Colin was combining substance A and substance B to form substance AB. He added 10 g of substance A and 45 g of substance B. How much of substance AB would Colin make? A: 10 g B: 35 g C: 45 g D: 55 g

Why does a gymnast rub powder on his hands before exercising on a set of parallel bars? (I need a scientific answer)

Which expression is a measurement of density? 5.2 cm 3 0.71 mg 20 g/cm 2 5.13 kg/l?