Physics, 28.11.2021 15:00, kayranicole1
4 In the circuit of figure 1, the cell E1 has an emf of 15V and internal resistance of 2;
the cell E2 has emf of 6V and internal resistance of 3; and the cell E3 has emf of 4V
and internal resistance of 1. In the circuit R1=4, R2=3 and R3=2
Determine the currents I1, I2, and I3 [5 marks]
Figure 1
Answers: 2
Physics, 22.06.2019 07:30, sansyboy7891
Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.
Answers: 2
Physics, 22.06.2019 10:50, afonseca73
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 17:30, RegencySlayer5304
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
4 In the circuit of figure 1, the cell E1 has an emf of 15V and internal resistance of 2;
the cel...
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