Suppose that \(t, x) satisfies the partial differential equation av a āt ar (1²) = 0 (i) state whether this equation is linear homogeneous, linear inhomogeneous or non-linear. explain your answer. (ii) separate the variables in this equation and find separate differential equa- tions for the variables t and x. (iii) hence find an expression for the general solution v(t, x).

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic