What is a compound?

a poly element pure substance

a homogenous mixture

a single element pure substance

a heterogeneous mixture

A vehicle traveling at a steady speed takes 4 hours to travel 244 km. calculate the average speed of this vehicle.

Albert jumps upward with an acceleration of 1.0 m/s2 while he is in an elevator that is accelerating upward at a rate of 1.5 m/s2 What is Albert's total acceleration?

What happens to speed when wavelength decreases

Which type of wave does NOT have a crest? A. a transverse wave B. an oscillating wave C. a longitudinal wave D. an electromagnetic wave

Historically, rhenium was alloyed to the tungsten in the filament of valve tubes to increase electron emission. What is the major reason this isn't used in x-ray tube filaments?

An automobile travels on a straight road for 25 km at 32 km/h. it then continues in the same direction for another 25 km at 64 km/h.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.