(a) what is the condition on operator so that it is hermitian? (b) lf q is hermitian show that (ψ i q ψ) is real, for any ψ.belongs to hilbert space. (c) is the eigenvalue λ of the hermitian operator q real? prove your answer. (d) if q ψ'n = 5 and q ψ'm = 5 ψ'm, show that ψ are orthogonal.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

If you put a helium-filled balloon in the refrigerator, what will happen?