Where does the energy come from?

1. A toy car with mass m1 travels to the right on a frictionless track with a speed of 3 m/s. A second toy car with mass m2 travels with a speed of 6 m/s to the left on the same track. The two cars collide and stick together.

What's the term for the idea that there aren't enough resources to satisfy everyone's wants and needs? A. Scarcity B. Consumer C. Supply D. Demand

Write the definition of a function print Grade, which takes one parameter containing a string value and returns nothing. The function prints "Grade: " followed by the string parameter.

Whats a transverse wave?

What statement about the greenhouse effect is not true?

with the wind a driver travels 300 mies in 5 hours. The return trip against the wind take the driver 6 hours. At what rate would thedriver travel without any wind What is the rate of thew ind?

How does sound travel from your vocal cords to someone's ear?

Select all the correct answers. Copper is listed in the 29th position in the periodic table. It's used for conducting electricity. What is copper? a metal a metalloid a nonmetal a noble gas an element

Neutron stars are smaller in size than less massive white dwarfs. a. True b. False

A lightning bolt carrying 30,000 A lasts for 50 micro-seconds. If the lightning strikes an airplane flying at 20,000 feet, what is the charge deposited on the plane?