Awave has a frequency of 270 hz and a wavelength of 60 m. what is the speed of the wave?
a. 0.022 m/s
b. 0.00062 m/s
c. 45 m/s
d. 1600 m/s

Will you chech and finish these for me, because i am stumped with them.

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.

Use vsepr theory to predict the molecular geometry of the molecule hcn.