If a lever lifts a load four times the effort applied and the effort distance is 5 times the load distance, calculate its efficiency.​

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

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 property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency