Centaurus A, with two large radio lobes, is an active galaxy
Indicate whether the statement is true or false
TRUE
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Four resistors of 20 ?, 40 ?, 60 ?, and 80 ? are connected across a 50-V DC source. What is the current through this circuit?
A) 0.25 A B) 0.50 A C) 0.75 A D) 2.0 A E) 4.0 A
A race car moving quickly around a track collides with a mosquito, which splatters on the car's windshield. Which object experiences a greater magnitude acceleration?
1.Both experience the same acceleration. 2.the race car 3.the mosquito 4.One cannot tell, you need to know the speeds of the mosquito and the race car.
A vibrating guitar string has exactly one antinode in the middle of the string and two nodes at the end. You have produced an oscillation of the string at its
A. second harmonic frequency. B. fundamental frequency. C. first harmonic frequency. D. third harmonic frequency.
The penumbra caused by an extended light source, as seen in this figure, results from what?
a. The superposition of images from point light sources spread throughout the region covered by the extended source. b. The poorer quality light source in the right hand figure. c. The image of the extended light source on the screen. d. Scattered light from other nearby objects. e. Light leaking into the room from outside sources.