It will be even more difficult to know if students are paying attention when they're wearing the that Sony is developing. They play and record video!

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.