What are the dimensions of the diffusion constant?
A. 
B. 
C. 
D. 
E. 
D.
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A proton is accelerated from rest through a potential difference of 150 V. It then enters a region of uniform magnetic field and moves in a circular path (radius = 12 cm). What is the magnitude of the magnetic field in this region?
a. 18 mT b. 12 mT c. 15 mT d. 22 mT e. 10 mT
An AC power generator produces 100 A (rms) at 3600 V. The voltage is stepped up to 100,000 V by an ideal transformer, and the energy transmitted through a long-distance power line with a total resistance of 100 W. What is the rms current in the long-distance line?
a. 3.6 A c. 1000 A b. 1.0 A d. 1.8 A
Explain the greenhouse effect and the impact made by humans on the greenhouse effect
What will be an ideal response?
Compressed air from a tank blows on a windmill. The windmill is connected to a generator that produces electrical energy. Part of that electrical energy is used to compress more air into the tank.
A. first kind B. second kind