The relationship between frequency, wavelength, and speed holds for light waves because a. light travels slower in a vacuum than in air b. all forms of electromagnetic radiation travel at a single speed in a vacuum c. light travels in straight lines d. different forms of electromagnetic radiation travel at different speeds

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.