Which of these is the easiest mineral identification property to use when you want to know whether you have pyrite or actual gold?

a. heft

b. luster

c. streak

d. magnetism

What are two ways you could alter the design of a baseball to make it travel faster from the pitcher's mound to home plate? Explain why.

What happens when more water is added to a saturated solution

A large solar panel on a spacecraft in Earth orbit produces 1.0 kW of power when the panel is turned toward the sun. What power would the solar cell produce if the spacecraft were in orbit around Saturn, 9.5 times as far from the sun?

How long will it take a 50w heater to melt 100g of ice at 0°c?

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?

A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

Now assume that the pitcher in Part D throws a 0.145-kgkg baseball parallel to the ground with a speed of 32 m/sm/s in the + x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line.

How far away is a cliff if an echo is heard 0.486 s after the original sound? Assume that sound traveled at 343 m/s on that day.

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Minerals such as sulfur can sometimes be identified by colors, true or false.