An ammeter and a 6v battery are connected in series with two resistors(one of which has a resistance of 16ohms and R, the ameter reads 0.25A. (a)what is the potential difference(voltage) across the 16ohm resistor?
(b)what is the potential difference across the resistor R?
(c)what is the resistance of R?
(d)what power is supplied by the battery?

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?