2. A silicon BJT is connected as shown in Figure 2. Assume that the absolute value of the base-emitter forward bias is 0.8 V, the current transfer ratio ß is 50, and the collector cut off
current ICEO is approximately zero. The power supply Vcc=15V. (20%)
(a) Compute the base current Ib and the collector current Ib. (10%)
(b) Compute the collector-emitter voltage VCE. (2%)
(c) What is the collector saturation current? (3%)
(d) Specify Rb1 to establish VCE=5V. (5%)
+Vec
Rb1
80 k2
500
Vce
Rb2
80 KO2
Figure 2​

Which object is most likely represented by a dot?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.