Determine the power of the stress term in the creep equation for titania using the following data at a temperature of 1250 K.
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Three resistors connected in series each carry currents labeled I1, I2 and I3 . Which of the following expresses the value of the total current IT in the system made up of the three resistors in series?
a. IT = I1 + I2 + I3 b. IT = (1/I1 + 1/I2 + 1/I3) c. IT = I1 = I2 = I3 d. IT = (1/I1 + 1/I2 + 1/I3)?1
The kinetic energy of an electron in orbit in hydrogen is _______ times its potential energy.
A. 1 B. -1 C. 1/2 D. -1/2 E. 2
In what way do observations of binary star systems support the special theory of relativity?
A) Stars in binary systems often orbit at speeds close to the speed of light, allowing us to check whether time dilation really occurs. B) Stars in binary systems are moving, so we can compare their moving masses to their rest masses. C) The fact that the stars appear distinct supports the idea that the speed of light is unaffected by the motion of the stars. D) Binary systems have two stars, and therefore give us twice the opportunity to test the theory than single star systems.
A long solenoid has a radius of 2.0 cm and has 700 turns/m. If the current in the solenoid is decreasing at the rate of 8.0 A/s, what is the magnitude of the induced electric field at a point 2.5 cm from the axis of the solenoid?
a. 56 mV/m b. 8.8 mV/m c. 88 mV/m d. 69 mV/m e. 44 mV/m