Which of the following is a business product?
a. a roll of sheet metal
b. a metal shelf system for storing inventory
c. a custom-built robot for welding metal
d. a pad of paper
e. Any of these could be a business product.

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.