Dyes used in clothes are chemicals that are destroyed by red light, because the

Question

Dyes used in clothes are chemicals that are destroyed by red light, because the red photons are very energetic. blue light, because the blue photons are very energetic. red light, because the red photons are very weak. blue light, because the blue photons are very weak. The amount of energy of a quantum of light of a given frequency is directly proportional to the speed of light. directly proportional to the wavelength of light. dependent on the intensity of light. always constant. inversely proportional to the wavelength of light. In the below situation the wire is moved 50 m/s to the left. In what direction does the current flow? out of page into page upwards clockwise counter-clockwise What is the power dissipated by the 2.0 Ohm resistor in the above situation? 2500 W 5000 W 10,000 W 50 W 100 W Calculate the force that is needed to keep the above wire moving at a constant speed. 2.0 N 0.0 N 50 N 5000 N 100 N Charge is distributed uniformly on the surface of a very large flat plate. The electric field 2 cm from the plate is 32 N/C. The electric field 8 from the plate is: 16 N/C 8 N/c 0.5 N/C 2.0 N/C 32 N/C

Explanation / Answer

34) a, redlight energitc

35) a, frequency is propotional to speed and E = hv

36) d Counter clock wise

37) a 2500 W, i2R

38)c 50 N , Power /velocity

39)b, 8 N/C

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