An object is placed to the left of a converging lens. Determine if the following statement is true or false. The image is always to the right of the lens
1.True
2.False
2
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A coaxial cable has an inner cylindrical conductor surrounded by cylindrical insulation and an outer cylindrical conducting shell. The outer shell carries the same current but in the opposite direction from that in the inner conductor as shown. If the coaxial cable sits in a uniform magnetic field directed upwards with respect to the cable, the effect of the field on the cable is
A. a net force to the left. B. a net force to the right. C. a net force upwards. D. no net force but a slight shift of the inner conductor to the left and the outer conductor to the right. E. no net force but a slight shift of the inner conductor to the right and the outer conductor to the left.
At t = 0 the switch S is closed with the capacitor uncharged. If C = 30 ?F, ? = 50 V, and R = 10 k?, what is the potential difference across the capacitor when I = 2.0 mA?
A. 20 V B. 15 V C. 25 V D. 30 V E. 45 V
How does the Sun's mass compare to Earth's mass?
A) The Sun's mass is about 300,000 times the mass of the Earth. B) The Sun's mass is about 30 times the mass of the Earth. C) Both have approximately the same mass. D) The Sun's mass is about 300 times the mass of the Earth.
In a gas of different types of molecules all at the same temperature, the speeds of the heavier molecules will generally be _____________ the speeds of the lighter molecules
a. the same as c. less than b. greater than d. unrelated to