Physics, 09.11.2019 03:31 nulledcracker12
An l-r-c series circuit, r = 160 ω , l = 0.790 h , and c = 1.30×10−2 μf . the source has a voltage amplitude of 140 v and a frequency equal to the resonance frequency of the circuit. a)what is the power factor? b)what is the average power delivered by the source? express your answer using two significant figures. c) the capacitor is replaced by one with a capacitance of c=3.20×10−2 μf and the source frequency is adjusted to the new resonance value. then what is the average power delivered by the source? express your answer using two significant figures.
Answers: 1
Physics, 22.06.2019 03:50
Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)
Answers: 3
Physics, 22.06.2019 13:30
6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.
Answers: 3
Physics, 22.06.2019 14:40
On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)
Answers: 3
Physics, 22.06.2019 15:00
Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive
Answers: 2
An l-r-c series circuit, r = 160 ω , l = 0.790 h , and c = 1.30×10−2 μf . the source has a voltage a...
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