How do elements change as you move down a column in a periodic table? a. the atomic radius decreases b. the number of protons decreases c. the atomic mass decreases d. the electronegativity decreases

Does some objects absorb both heat and light energy?

A large marble is dropped in a graduated cylinder with 35 ml of water in it. The water level increases to 49ml. What is the volume of the marble

What environments does tornado not occur in?

A car having an initial velocity of 12 meters per second speed up uniformly to 22 meters per second. This change is made in 4 second. What is the car's acceleration? Show solution

What is the net force on the loop from the wire if the loop carries a clockwise current i2 = 50 a?

The equation e = mc2 relates mass and a. energy b. force c. work d. gravity

What should a scientist do to use scientific methods for determining the relative age of Earth's rocks? A be biased in opinion B disregard views of others C use creative ideas D prove that methods are non-testable

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.