Four students want to know the most accurate way to measure the speed of a wave. the method their professor uses has a percent error of 3.68%. each student tests a different method and writes the result in the chart below. if the accepted value of a wave is 121 m/s, who has the most accurate method of measuring the speed of a wave?
a.)the professor
b.)erin
c.)jean-claude
d.)suresh

The amount of potential energy possessed by an elevated object is equal to what?

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?