Two students stand 4.0 meters apart and shake a jump rope, creating a standing wave with 5 antidotes. what is the wavelength of the standing wave? 1.6m
0.8m
4.0m
5.0m

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

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging