An EM wave has a speed of 3 x 10^8 m/s and a wavelength of 1.3cm. what is the frequency of the EM wave EXPLANATION AS WELL PLS HELP ASAP

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

Photons with the highest energy have the longest period

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.