The application of solid-state physics that is the study of the arrangement of atoms in a solid is O metallurgy.
O quantum mechanics.
O crystallography
electromagnetism.

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?