9. An efficient LED light bulb uses energy at a rate of 7 watts or 7 J/second. What total amount of electrical energy is used if the light is on for 2 hours?

Why there is no inductive reactance in dc circuits

Which is not true about oxygen-17 and oxygen-18?

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).