Suppose an electrical wire is replaced with one having every linear dimension doubled (i. e., the length and radius have twice their original values). How is the resistance of the wire affected?

a. The wire has the same resistance as before.
b. The wire has more resistance than before.
c. The wire has less resistance than before.

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

The plum pudding model of the atom states that ?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?