Which would you expect to have the greatest amount of friction?

a - a smooth surface on a smooth surface

b-a smooth surface on a rough surface

c-a rough surface and air

d-a rough surface on a rough surface

Are molecular compounds and covalent molecules the same thing?

True or false: electricity follows a circular pattern?

Do sound waves must have a medium to travel but elctromagnetic waves cannot

Max (15 kg) and Maya (12 kg) are ice-skating on a frozen pond. At one moment, when Max is skating away from the shore at 8.2 m/s and Maya is skating towards the shore at 4.6 m/s, they collide and bounce off each other without falling.

A wave has a frequency of 900 Hz and a wavelength of 200 m. at what speed is the wave traveling

How many protons and electrons are present in a vanadium atom?

A dog runs 27 m in 3 s. what is the dogs average speed. a 9 m/s b 24 m/s c 30 m/s d 81 m/s

Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m3) of radius 82 km and height 5.0 km

how can you expalin the phenomena of three atoms needed to bond together two atoms with the law of the conservation

What type of change occurs when water change from a solid to a iquid?