Before organisms with nuclei evolved, life on earth consisted only of unicellular a) eukaryotes. b) fungi. c) prokaryotes. d) protists.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?