4 pleasee i have to submit in 10 minutes

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.