Reverse bias permits full current through a pn junction.
a. True
b. False
Answer: b. False
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The Doppler effect is sensitive only to motion along the line of sight
a. True b. False Indicate whether the statement is true or false
Camera Exposure: A camera lens has a focal length of 50.0 mm and an aperture setting of f/4.00. What is the diameter of the aperture of this lens?
A. 12.5 mm B. 10.1 mm C. 25.0 mm D. 35.4 mm E. 200 mm
Find the speed of an ocean wave whose vertical displacement y as a function of time t is given by y(x,t) = 3.7 cos(2.2x - 5.6t), where all quantities are in SI units
A) 2.5 m/s B) 1.9 m/s C) 3.5 m/s D) 4.5 m/s
When a mixture of gases is placed in a container at a given temperature, the pressure in the container is equal to the sum of the pressures that the individual gases would exert if they separately occupied the entire container at the same temperature
. Given that air is basically a mixture of nitrogen, with a molecular weight of 28 g/mol, and oxygen, with a molecular weight of 32 g/mol, what must be the ratio of the mass of oxygen to the mass of nitrogen in air for air to have an effective molecular weight of 29? A) 8:21 B) 3:5 C) 5:7 D) 32:87 E) 3:7