What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is the outcome? What happens after an hour in vinegar?

The electric field in a particular thundercloud is 3.8 x 105 N/C. What is the acceleration (in m/s2) of an electron in this field? (Enter the magnitude.) m/s2

The structure of which substances tends to exhibit the greatest hardness? A. pure metals B. pure nonmetals C. ionic compounds D. covalent compounds

What's earths most precious element?

Which term refers to the loss of fertile soil from drying out? erosion desertification depletion overuse

Sudden, hard steering to the left would shift the center of mass to shift to:

Atoms in a molecule are held together through shared

Why is it not a good idea to stick a metal fork in a plugged in toaster to remove a stuck piece of toast? In your explanation be sure to use the concepts of electrical conduction and voltage.

Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. A 1,000 kg ball traveling at 5 m/s would have kinetic energy.