If a star is 50 light-years away from earth, how long will it take light to travel from star to earth?

Obsidian is a volcanic glass that forms when lava cools very quickly and consists of a solid mass of glass through and through. Why is obsidian not classified as a mineral?

Convert: Thermal conductivity value of 0.3 Btu / (h ft°F) to W / (m °C). Surface heat transfer coefficient value of 105 Btu / (h ft2 oF) to W / (m20C)

In prokaryotic and eukaryotic cells the amount of water in the cell is kept at a steady state. the organelles through which water passes into and out of cell is the

What is the relationship between the electric force and each one of the charges?

Convert 1 mm of hg into Pascal. Take density of hg = 13.6*10^3kg/m^3. g = 9.8m/s*s

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour.

A 2kg blob of putty moving at 4 m/s slams into a 6kg blob of putty at rest what is the speed of the to stick together blobs immediately after colliding

A stone is thrown vertically upward with a speed of 12m/s from the edge of a cliff 70 m high (a) How much later it reaches the bottom of the cliff? (b) What is its speed just before hitting? And (c) what total distance did it travel? (Ans: 5.

After completing a career search, Patrick has decided that he wants to be a paralegal. Which two skills or abilities are important for him to have in order to excel in this career?

The highest peak in the vicinity (<100 kilometers) of Mt. Kilimanjaro is located to the: a. north. b. west c. east. d. south. e. northeast