two resistors are to be combined to form an equivalent resistance of 1000 ohm. the resistance are taken from available stock on hand as acquired over the years. readily are two common resistors rated at 500+/_50 ohm and two common resistors rated at 2000 ohm+/_5%. what combination of resistors (series or parallel ) would provide the smaller uncertainity in an equivalent 1000 ohm resistance?

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.

Frequency of electromagnetic waves that a radio station is assigned is called

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?