A rectangular coil of 100 turns measures 40.0 cm by 20.0 cm. This coil is placed next to an electromagnet which is switched on, increasing the magnetic field through the coil from zero to 0.800 T in 50.0 ms. If the resistance of the coil is 2.0 ohms, what are the induced voltage and current in the coil?
What will be an ideal response?
128 V, 64 A
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The first spacecraft to drop a weather probe into Jupiter's atmosphere was:
A) Cassini. B) Global Surveyor. C) Voyager 2. D) Viking 1. E) Galileo.
A rock bed used for thermal storage has washed rocks of ½ inch nominal diameter. The bed is 5 feet high, 5 feet wide and 8 feet long. One thousand cubic feet per minute (cfm) of air passes vertically through the rock bed. Estimate the convective heat transfer coefficient for the air/rock bed under this flow condition.
What will be an ideal response?
Energy Levels: The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy states for the transition that produces this light? (c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A. 1.54 eV B. 1.65 eV C. 1.79 eV D. 1.81 eV
The sound from a single source can reach point O by two different paths. One path is 20.0 m long and the second path is 21.0 m long
The sound destructively interferes at point O. What is the minimum frequency of the source if the speed of sound is 340 m/s? A) 340 Hz B) 6800 Hz C) 520 Hz D) 680 Hz E) 170 Hz