Acertain planet has an escape speed . if another planet has twice size and twice the mass of the first planet, its escape speed will be

a) sqrt[2] v
b) v
c) v/2
d) v/sqrt[2]
e) 2v

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

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

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.