In recent decades, some landfills have collected gases and used them directly as an alternative fuel or burned them to produce renewable energy in the form of electricity.

What does the term "basic unit of matter" refer to? Select one of the options below as your answer: a. Atoms b. Elements c. Molecules

A centripetal force of 190 N acts on a 1,550-kg satellite moving with a speed of 5,300 m/s in a circular orbit around a planet. What is the radius of its orbit?

According to the trend shown by the graph 750 ml of water should take approximately 20 minutes to boil? a. true b. false

What is the bending of a wave around a barrier?

Which is an example of conduction? Soup is warmed in a microwave oven. A hand is burned when touching a pot handle. Air above an ocean warms up and rises. A stone gets hot from sitting outside on a sunny day.

What would result from under-coverage? A. a lack of accurate result B. an incorrect independent variable C. an experiment D. accurate result

What can be said about the force of gravity acting on an object that is floating stationary underwater and not moving up or down? A. The buoyant force equals the force of gravity, so there is no net force. B.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)

Do tides depend more on the strength of gravitational pull or on the difference in strengths? explain.