The bed of a gravel truck is lifted to pour out a load of rock. If the bed of the truck is 12 feet long, how high is it from the frame when is is tipped upward at a 30 degree angle?

This is for Trigonometry ∠≅ _≅√

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?

Pollution from one country can affect another. for example, south korea is especially affected by pollution and dust storms that come from

How much damage is done by landslides in a typical year in the u.s.?