1. Use this image to answer the following questions. 1). Identify a pairs of lightbulbs where the current is the same for both bulbs.
2). Explain why.
3). Lightbulb A goes out. Which other lightbulbs go out? Explain why,
4). Lightbulb B goes out. Which lightbulbs go out, and which ones stay on? Explain
why.

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

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