The viscosity of magma depends upon its silica content and its.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Why has there been such a large increase in theft and other crimes in the u.s

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use