Mr. Worster is on a passenger train that is headed East at 45 miles per hour. Suddenly he gets very hungry, so he gets up and walks West toward the vending machine at 3 miles per hour. If someone on the ground were watching the train go by, how fast would it appear Mr. Worster is moving?

Will mark brainliest how many electrons can be held in the energy level n = 4?

What is the molecular formula of ferrous nitrate and ferric nitrate

Individuals within populations exhibit some diversity. as a result of possessing slightly different traits, some individuals are better able to survive and reproduce than others. if these individuals changes in the characteristics of the population may occur over time. the cumulative change in these characteristics is known as