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2 years ago

What is a electric curcit

Physics

2 answers:

Anastaziya [24]2 years ago

8 0

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<h2>ELECTRIC CIRCUIT</h2>

electric circuit, path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.

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loris [4]2 years ago

4 0

Hey there! I'll try to provide you with my best answer.

Answer: Electric circuit is a path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.

Hope it helps!

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A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it’s average speed?

PIT_PIT [208]

Distance is 90km,time 1 hr
distance 2 is 82km,time 5 hrs
average speed=total distance travelled/total time taken.
90+82=172/5+1=6
average speed=28.7km over hour

4 0

3 years ago

When a fluid flows over an object, the "friction drag": __________.A.is the drag due to the shear stress only. B. depends only o

astra-53 [7]

Answer:

D. is greater for turbulent flow than for laminar flow

Explanation:

what is friction drag?

friction drag is a phenomenon experienced when a body moves through a fluid. A practical example can be seen in the mild warmth we experience rubbing the palm's of one's hand together only in this case we are dealing with a solid body and a fluid (e.g air, water). friction drag is directly proportional to the area of the surface in contact with the fluid and increases as velocity increases. We see a practical example of this when the rate at which one rubs the palms together is fast but we use the word turbulent when we are dealing with fluids. Turbulent flow creates more friction drag than laminar flow( Flow between a smooth body and fluid) due to its greater interaction with the surface of the body
it is important to know that friction is also called viscous drag or skin drag
I recommend Richardson and coulson vol 2 textbook, page 149, Chemical enginering fluid mechanics textbook by Ron dardy, page 341 for clearer explanation

4 0

2 years ago

In preparation for building a space station, an astronaut removes a self-telescoping uniform rod from the cargo bay and releases

emmainna [20.7K]

To solve this problem it is necessary to apply the concepts related to the conservation of angular momentum. This can be expressed mathematically as a function of inertia and angular velocity, that is:

$L = I\omega$

Where,

I = Moment of Inertia

$\omega$ = Angular Velocity

For the given object the moment of inertia is equivalent to

$I = \frac{mr^2}{12}$

Considering that the moment of inertia varies according to distance, and that there are two of these without altering the mass we will finally have to

$L_i = L_f$

$I_i \omega_1 = I_f \omega_2$

$(\frac{mr_{initial}^2}{12})(\omega_1)=(\frac{mr_{final}^2}{12})(\omega_2)$

$(r_{initial}^2})(\omega_1)=(r_{final}^2)(\omega_2)$

Our values are given as,

$r_{initial} = 3m\\\omega_1 = 0.05rad/s \\r_{final}=1.5m$

Replacing we have,

$(3^2})(0.05)=(1.5^2)(\omega_2)$

$\omega_2 = 0.2rad/s$

Therefore the angular speed after the catch slips is 0.2rad/s

7 0

2 years ago

If a thief jumps from the tried floor of a house while holding a box on

Ksju [112]

What do you mean? it doesn't make sense

7 0

3 years ago

Read 2 more answers

What is the relationship between current and voltage in the filament of an incandescent light bulb?

lawyer [7]

An incandescent light bulb is shown in the picture. The filament is the one labelled with number 3. This is a wire made usually of tungsten where the current passes to complete the flow of the electrons from the source to itself as the load. The tungsten material offers a quantity of resistance in ohms. The relationship between the current (I) , resistance (R) and voltage (V) is expressed by the Ohm's Law: V=IR. The voltage across the bulb is directly proportional to the current passing through it with the resistance of the material as its constant of proportionality.

In short, the voltage and current are related through the filament's resistance according to Ohm's Law.

8 0

2 years ago