Q6: The diffusion coefficients for carbon in nickel are given at two temperatures, as follows: T(°C) 600 D (m2/s) 5.5x10-14 700 3.9x10-13 a) Determine the values of D. and the activation energy Qd. b) What is the magnitude of D at 850 °C?

Can you help me solve this and explain clearly I saw some answers on chegg but I don’t understand it .

Capacitance per unit area at no reverse bias is two pF/cm². For a step graded diode of area 5cm², what is net capacitance at 99 V reverse bias voltage?

For the diode circuit to the right 8002 a V 1002 b 40mA 0.001V' a) To the left of points a and b, find the load-line relation by expressing the current, I with voltage, V. HINT: Write KCL equation for the circuit diagram and write I in terms of V from that KCL equation. This will be your load-line equation. b) Assume the diode has the following characteristic, using the load-line relation you found in (a), determine the operating voltage, V and current, I for the circuit. ip (mA) 20 15 10 5 Vp (V) 3.0 0.5 '1.0 1.5 2.0 2.5