Bill and amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away, it takes amy 40 minutes to arrive at school. bill arrives 20 minutes after amy. how much faster (in meters/second) is amy's average speed for the entire trip?

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Diamond will scratch quartz. true or false

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.