Physics, 11.08.2021 23:50 alisonguerrero17
A newly designed analog radio is found to require unusually precise fine tuning of the frequency dial to pick up a certain radio station. 1) To create a less-sensitive dial, the radio engineer should:
a. increase the Q (quality factor) of the radio circuit.
b. decrease the Q (quality factor) of the radio circuit.
c. decrease the resistance of the radio circuit.
Answers: 1
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Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?
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Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
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A newly designed analog radio is found to require unusually precise fine tuning of the frequency dia...
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