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4 years ago

When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is?

Physics

1 answer:

alekssr [168]4 years ago

3 0

Current = Power/Voltage = 60/120 = 0.5 amperes

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NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A sled and rider wi

Whitepunk [10]

Answer:

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Explanation:

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3 years ago

Consider a resonator with ω0 = 100 rad/sec and a Q factor of 100. Calculate the time takes it to settle within 2% of the final v

Alla [95]

Answer:

8 s

Explanation:

Damping factor, F is given by

$F=\frac {1}{2Q}$ where Q is quality factor

Also, we know that the settling time, T is given by

$T=\frac {4}{FW}$ where W is the resonant frequency.and substituting the first equation here we get

$T= \frac {4\times 2Q}{W}$

Since it takes 2% of final value to settle and considering 100 rad/s for resonant frequency and taking quality factor of 100 then

$T=\frac {4\times 2\times 100}{100}= 8 s$

5 0

3 years ago

A 29.0 kg beam is attached to a wall with a hi.nge while its far end is supported by a cable such that the beam is horizontal.

Elanso [62]

The tension in the cable is 169.43 N and the vertical component of the force exerted by the hi.nge on the beam is 114.77 N.

<h3>Tension in the cable</h3>

Apply the principle of moment and calculate the tension in the cable;

Clockwise torque = TL sinθ

Anticlockwise torque = ¹/₂WL

TL sinθ = ¹/₂WL

T sinθ = ¹/₂W

T = (W)/(2 sinθ)

T = (29 x 9.8)/(2 x sin57)

T = 169.43 N

<h3>Vertical component of the force</h3>

T + F = W

F = W - T

F = (9.8 x 29) - 169.43

F = 114.77 N

Thus, the tension in the cable is 169.43 N and the vertical component of the force exerted by the hi.nge on the beam is 114.77 N.

Learn more about tension here: brainly.com/question/24994188

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6 0

2 years ago

12. An unbalanced 6.0 newton force acts eastward on an object for 3.0 seconds. The impulse

meriva

Answer:

Impulse=18Ns

Explanation:

Impulse= force*time

Plug in known values...

I=6N*3s

I=18Ns

3 0

3 years ago

A parallel circuit has three branches. Each branch has a resistance of 37.5 ohms. The total current is 7.5 amps. What is the cur

Sophie [7]

Answer:

Current in each branch will be 2.5 A

Explanation:

We have given that a circuit has three branch each has a resistance of 37.5 ohm

We have also given that a total current of 7.5 A is flows through the circuit

As we know that in parallel circuit total current is the sum of current flowing through each branch

As the resistances of each branch is same so current will also be same

As there is 3 branches in circuit so current in each branch will be $\frac{7.5}{3}=2.5A$

4 0

4 years ago