Anerobic digestion for biomass production takes place under conditions of
a. no oxygen
b. high temperatures
c. strong acidity for dissolving waste
a
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A charged capacitor is connected to an ideal inductor to form an LC circuit with a frequency of oscillation f = 1.6 Hz. At time t = 0 the capacitor is fully charged
At a given instant later the charge on the capacitor is measured to be 3.0 ?C and the current in the circuit is equal to 75 ?A. What is the maximum charge of the capacitor? A) 6.0 µC B) 10 µC C) 8.0 µC D) 2.0 µC E) 4.0 µC
What do we mean by the half-life of a radioactive isotope?
A) it is the amount of time a person can be exposed to radiation without getting sick B) it is the time for half the number of radioactive nuclei to become stable nuclei C) it is the amount of time for half of the nuclei to become radioactive D) it is the time for half the number of radioactive nuclei to decay
What is the outside temperature if 4000 kcal of heat is lost through a 4.0 m2 pane of 0.30 cm thick glass (k = 2.0 × 10-4 kcal/s?m?°C) in one hour from a house kept at 20°C?
A) 0°C B) 4°C C) 16°C D) 18°C E) 24°C
A tire pressure gauge reads 30 psi when the atmospheric pressure is 14 psi. The net force on 2 square inches of the tire is 60 lbs
Indicate whether the statement is true or false