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Papessa [141]
2 years ago
12

•. What is called the error due to the procedure and used apparatuses?

Physics
1 answer:
sashaice [31]2 years ago
6 0

Answer:

c.) \: systematic \: error \\  \\  =  > it \: is \: the \: error \: caused \:  \\  \\ due \: to \: the \: procedure  \\  \\ \: and \: used \: apparatuses \\  \\ \huge\mathfrak\red{Hope \: it \: helps}

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A golfer hits a golf ball upwards at an angle. We can ignore air resistance on the ball.
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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 freq
wolverine [178]

Answer: a) 1 b) 61 W c) 61 W

Explanation:

a) The  Power Factor (also known as cos φ), is defined by the difference in phase between current and voltage, in a RLC series circuit, and is expressed as follows:

cos φ = R / Z = R / \sqrt{(R)^{2} + (Xl -Xc)^{2} }

In resonance, XL =XC, so the circuit behaves like it were purely resistive, so Z=R.

Replacing in the expression for power factor, we have:

cos φ = R/Z = R/R = 1

This means that in resonance, current and voltage are in phase each other.

b) The average power delivered by the source, in resonance, is simply the power dissipated at the resistance R, as follows:

Pavg = V² rms / R = V₀² / √2 / R = 61 W

c) If the circuit remains in resonance, the average power , which does not depends on frequency provided this condition remains, keeps the same, i.e. , 61 W.

7 0
3 years ago
Sean applies a force of 100N to move a box 5 meters. How much work did he do?
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Answer:

500 Joules

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