Which is an example of something heated by conduction? a food heated in a microwave oven b a waffle iron heated by coils c pavement heated by the sun d a room heated by moving air

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?