Nichrome is a nickel-chromium alloy used in heating applications like electric toasters, because it has a relatively high resistivity and heats up when a current passes through it. The resistivity of nichrome is 1.50 × 10−6 Ω·m. Suppose you have a nichrome wire 0.219 mm in diameter and 77 cm long. Required:
a. What is the resistance of the nichrome wire?
b. Find the current when a potential difference of 120 V is connected across the wire's ends.

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

What are two different ways you could find the value of a? explain these methods.

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?