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aksik [14]
4 years ago
13

Describe how fuses and circuit breakers protect against electrocution and household fires. How do you restore a broken circuit a

fter the problem has been corrected?
Physics
1 answer:
Ray Of Light [21]4 years ago
6 0

Answer:

Explanation: A fuse or a circuit breaker automatically disconnects a circuit from the electric power the moment more current is drawn than its design allows. Electrical codes require one or the other to be installed at the point where power first enters a building. The electric supply to a home is usually divided into several circuits, each with its own fuse or breaker, of a rating appropriate for the thickness of the circuit's wires. That way, if the power is interrupted in part of the home, the rest of the home stays connected.

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Assume that the mass has been moving along its circular path for some time. You start timing its motion with a stopwatch when it
lesya692 [45]

Answer:

v = R\omega(-sin\omega t \hat i + cos\omega t \hat j)

Explanation:

As we know that the mass is revolving with constant angular speed in the circle of radius R

So we will have

\theta = \omega t

now the position vector at a given time is

r = Rcos\theta \hat i + R sin\theta \hat j

now the linear velocity is given as

v = \frac{dr}{dt}

v = (-R sin\theta \hat i + R cos\theta \hat j)\frac{d\theta}{dt}

v = R\omega(-sin\omega t \hat i + cos\omega t \hat j)

6 0
3 years ago
Define faith in your own words.
krok68 [10]

Answer:

Faith, to me is almost like hope but for faith you need to believe. Some people associate the word faith with religion. But that's not it. Faith is really just a stronger term than believing someone. Like you can believe in someone but not have faith in that same person. You can have faith in someone but to do that you have to believe and trust them.

Explanation:

6 0
2 years ago
A force of 50N is applied to the end of a lever to lift a rock that is 350N . what is the mechanical advantage of a lever?
Ostrovityanka [42]

Answer:

MA  = 7

Explanation:

Mechanical Advantage = Load/Effort

From the question,

Load  = 350N

Effort applied = 50N

Mechanical Advantage = 350N/50N

Mechanical Advantage = 7

Hence the mechanical advantage is 7

5 0
3 years ago
What concept should be used to determine the answer to the following: At what distance downstream will the boat reach the opposi
Kipish [7]
Vector resolution will be used to answer this question as the boat's velocity will have two components, one allowing it to travel across the river and the other taking it downstream.
5 0
4 years ago
A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?
iris [78.8K]

Answer:

Explanation:

The equation for acceleration is

a=\frac{v_f-v_0}{t} where vf is the final velocity and v0 is the initial velocity. For us, the final velocity is 25 m/s and the initial is 0 because the train started from resting position. Filling in and solving for a:

a=\frac{25-0}{30.0} so

a = .83 m/s/s

4 0
3 years ago
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