Aportable electric fan is operating on a 9.0 v battery. the current going into the motor is 160 ma. determine the resistance of the portable fan.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?