Physics, 15.10.2019 03:10 parkerfreeze
3. describe qualitatively the operation of the circuit in fig. 3.3. what is the purpose of r1, r2 and the diodes? what is the purpose of the darlington connections? 4. if the feedback and input resistors of ic2 are 10k and 1k respectively, what is the voltage gain of the circuit in fig. 3.3? 5. what is the output resistance of the circuit? 6. what is the current gain?
Answers: 1
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Physics, 23.06.2019 01:30, eliascampos823
Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?
Answers: 3
Physics, 23.06.2019 04:00, lizzlegnz999
Robin is swinging back and forth from a trapeze. in which of the following situations is his kinetic energy being transformed into potential energy
Answers: 2
3. describe qualitatively the operation of the circuit in fig. 3.3. what is the purpose of r1, r2 an...
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