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3 years ago

10

Imagine that a circuit breaker opened the circuit every time you operate the light, coffee maker, and microwave at the same time

What could be causing this?

1 answer:

LekaFEV [45]3 years ago

7 0

Answer:

the power

Explanation:

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A level curve on a country road has a radius of 150 m. What is the maximum speed at which this curve can be safely negotiated on

SSSSS [86.1K]

The maximum speed of the car is 24.3 m/s

Explanation:

For a car moving along an unbanked turn, the frictional force provides the centripetal force required to keep the car in circular motion. Therefore, we can write:

$\mu mg = m\frac{v^2}{r}$

where the term on the left is the frictional force while the term on the right is the centripetal force, and where

$\mu=0.40$ is the coefficient of friction between the tires and the road

m is the mass of the car

$g=9.8 m/s^2$ is the acceleration of gravity

v is the speed of the car

r = 150 m is the radius of the curve

Solving for v, we find the (maximum) speed at which the car can move along the turn:

$v=\sqrt{\mu gr}=\sqrt{(0.40)(9.8)(150)}=24.3 m/s$

For speed larger than this value, the frictional force is no longer enough to keep the car along the turn.

Learn more about circular motion:

brainly.com/question/2562955

brainly.com/question/6372960

#LearnwithBrainly

8 0

3 years ago

What is the difference between mutual flux, leakage flux and magnetizing flux<br>

Lemur [1.5K]

In simple words, flux can be stated as the rate of flow of a fluid, radiant energy, or particles across a given area.

<u>Explanation:</u>

<u>Mutual Flux:</u>

The magnetic lines present in among two magnets or solenoid is mutual flux.
These are the lines in which the attraction and repulsion happens.
The SI unit of mutual flux is the Henry

<u>Leakage Flux:</u>

In simple words, it can be stated as the magnetic flux which does not follow the specially designed way in a magnetic circuit.
Leakage flux in the induction motor takes spot due to current runs through the essence of the induction motor.
The SI unit of Leakage flux is the Weber

<u>Magnetizing flux</u>

Magnetic flux is an analysis of the entire magnetic field which moves in a given field
In simple words can be defined as the Magnetic flux is what generates the field around a magnetic material.

The SI unit of magnetic flux is the Weber

3 0

3 years ago

In order to catch a fast-moving softball with your bare hand, you extend your hand forward just before the catch and then let th

hichkok12 [17]

This is a concept of momentum. In equation, momentum is the product of force and distance. When a ball is thrown, its force is constant all throughout unless disturbed by an external force. Therefore, force is the constant of proportionality that relates momentum with distance. When you block a ball from a given distance, you would feel the great force on your hand. In order to reduce the force, you have to follow the direction of the force in order to minimize the impact. By doing this, you gradually decrease the momentum of the ball.

8 0

3 years ago

A boulder of mass 2000. kg breaks loose of a mountainside and plunges 200. m straight down into a lake at a temperature of 5.00◦

natka813 [3]

Answer:

DS = 13865.7[J/K]

Explanation:

We can calculate the energy of the rock, like the potential energy relative to the lake level. Which can be calculated by means of the following expression of the potential energy:

$E_{p}=m*g*h\\\\where:\\m = mass = 2000[kg]\\h = elevation = 200 [m]\\g = gravity = 9.81[m/s^2]$

Therefore:

$E_{p}=2000*9.81*200\\E_{p}=3924000 [J]\\$

This energy is transformed into thermal energy.

we shall remember that isothermal heat transfer processes are internally reversible, so the entropy change of a system during one of these processes can be determined, by the following expression.

$DS=\frac{Q}{T}\\ where:\\DS = entropy change [J/K]\\Q = Heat transfer [J]\\T = temperature [K]$

T = 5 + 278 = 283[K]

DS = 3924000 / 283

DS = 13865.7[J/K]

5 0

4 years ago

A girl is sitting in a sled sliding horizontally along some snow (there is friction present). The mass of the girl is 28.4 kg an

Luden [163]

Answer:

-13,594 J

Explanation:

First of all, we have to find the acceleration of the girl+sled system. This can be found by using Newton's second law of motion:

$F=ma$

where:

F = -96 N is the net force (the force of friction) acting on the system

m = 28.4+15.3 = 43.7 kg is the total mass of the girl and the sled

a is their acceleration

Solving for a,

$a=\frac{F}{m}=\frac{-96}{43.7}=-2.2 m/s^2$

The negative sign means the sled is slowing down.

Now we can find the displacement of the sled during the deceleration phase, by using the suvat equation:

$s=ut+\frac{1}{2}at^2$

where

u = 41.8 m/s is the initial velocity

t = 3.76 s is the time

$a=-2.2 m/s^2$ is the acceleration

So,

$s=(41.8)(3.76)+\frac{1}{2}(-2.2)(3.76)^2=141.6 m$

Now we can find the work done by friction on the sled, which is given by:

$W=Fs$

where

F = -96 N is the force of friction

s = 141.6 m is the displacement of the sled+girl system

Solving,

$W=(-96)(141.6)=-13,594 J$

where the negative sign means the force is opposite to the displacement.

8 0

3 years ago