The principal advantage of sending electric power across country on very high voltage transmission lines is that
a) they carry less energy per charge than low voltage transmission lines. b) electric power lost in the wires is greatly reduced. c) these transmission lines are less likely to get in the way than low voltage transmission lines—which are much closer to the ground. d) they carry much more current than low voltage transmission lines.

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

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?