If an airplane travels a distance of 500km in 5 hours, what id the average speed?

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

Which property of water causes water drops to bead on a freshly waxed car?

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied