All categories

2 years ago

Select the correct answer from each drop-down menu.

1 answer:

8 0

Turbine, rotational energy, and electric generators are the correct answer for the blanks from the given options.

<h3>What is an electric motor?</h3>

An electric motor is a mechanism that turns electricity into mechanical energy.

The interaction between the motor's magnetic field and electric current in a wire winding generates force in the form of torque imparted to the motor's shaft in most electric motors.

An electric generator is physically equivalent to an electric motor, but it converts mechanical energy into electrical energy using a reversed flow of power.

The sentences describe how power generation works as;

All <u>turbines </u>work on the same basic principle of converting kinetic energy, generated through the combustion of fuels or from the movement of wind or water, into <u>rotational energy.</u> This energy is then used to drive an <u>electric generator</u> to produce electricity.

Hence, Turbine, rotational energy, and electric generators are the correct answer for the blanks.

To learn more about the electric motor refer to the link;

brainly.com/question/15409160

#SPJ1

You might be interested in

An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track

BartSMP [9]

1) 234 s, 6.18 km

The position of the car at time t is described as

$x_c(t) = v_c t$

where

$v_c = 95 km/h$ is the velocity of the car

The position of the head of the train instead is given by

$x_t(t) = d + v_t t$

where

d = 1.30 km is the initial distance between the car and the head of the train

$v_t = 75 km/h$ is the velocity of the train

The car overtakes the train when

$x_c =x_t$

Substituting and solving for t,

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95-75}=0.065 h = 234 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.065 h)=6.18 km$

2) 27.5 s, 0.72 km

In this case, the train is travelling in opposite direction, so we can write

$v_t = -75 km/h$

Again, we can use the same equation as before

$x_c =x_t$

And solving for t, we find

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95+75}=0.0076 h = 27.5 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.0076 h)=0.72 km$

5 0

3 years ago

The distance between two consecutive nodesof a standing wave is 20.9cm.Thehandgen-erating the pulses moves up and down throughac

irina1246 [14]

Answer:

Velocity, v = 0.239 m/s

Explanation:

Given that,

The distance between two consecutive nodes of a standing wave is 20.9 cm = 0.209 m

The hand generating the pulses moves up and down through a complete cycle 2.57 times every 4.47 s.

For a standing wave, the distance between two consecutive nodes is equal to half of the wavelength.

$\dfrac{\lambda}{2}=0.209\ m\\\\\lambda=0.418\ m$

Frequency is number of cycles per unit time.

$f=\dfrac{2.57}{4.47}\\\\f=0.574\ Hz$

Now we can find the velocity of the wave.

Velocity = frequency × wavelength

v = 0.574 × 0.418

v = 0.239 m/s

So, the velocity of the wave is 0.239 m/s.

4 0

3 years ago

A 3 kg block is released from rest to slide down a ramp with friction. The length that the block slides is 2 meters and the angl

Arte-miy333 [17]

Answer:

(a). The acceleration is 3.20 m/s².

(b). The amount of work done by each force is 19.2 J.

(c). The total work done on the block is 19.2 J.

(d). The final speed of the block is 6.26 m/s.

Explanation:

Given that,

Mass of block = 3 kg

Distance = 2 m

Angle = 30°

Coefficient of kinetic friction = 0.20

(a). We need to calculate the acceleration

Using balance equation of force

$N = mg\co\theta$

$mg\sin\theta-f_{k}=ma$

$a = g\sin\theta-\mu g\cos30$

Put the value into the formula

$a=g(\sin30-0.20\cos30)$

$a=9.8(\dfrac{1}{2}-0.20\times\dfrac{\sqrt{3}}{2})$

$a=3.20\ m/s^2$

The acceleration is 3.20 m/s².

(b). We need to calculate the amount of work done by each force

Using formula of work done

Normal force is

$N = mg\cos30$

So due to this the net force is zero then the no work done by reaction force.

By another force,

$W= F\times d$

$W=ma\times d$

Put the value into the formula

$W= 3\times3.20\times2$

$W=19.2\ J$

The amount of work done by each force is 19.2 J.

(c). We need to calculate the total work done on the block

The total work done on the block is 19.2 J.

(d). We need to calculate the final speed of the block

Using equation of motion

$v^2=u^2+2gs$

Put the value into the formula

$v^2=0+2\times9.8\times2$

$v=\sqrt{2\times9.8\times2}$

$v=6.26\ m/s$

The final speed of the block is 6.26 m/s.

Hence, This is the required solution.

4 0

3 years ago

The velocity time graph of an object is shown below. How far does the object travel in the time interval t =4 s to t = 6 s?

Trava [24]

The distance covered by the object between t =4 s and t = 6 s is 4 m

Explanation:

In a velocity-time graph, the distance covered by the object represented can be found by calculating the area under the curve.

Therefore, the distance covered by the object between t = 4 s and t = 6 s is the area under the curve between 4 s and 6 s.

We see that we have to calculate the area of a triangle, with:

Base:

$b=6-4 = 2$

And height:

$h=4-0 = 4$

Therefore, the area is

$A=\frac{1}{2}bh=\frac{1}{2}(2)(4)=4$

So, the distance covered by the object is 4 m.

Learn more about distance:

brainly.com/question/3969582

#LearnwithBrainly

3 0

3 years ago

Technician A says that the radiator should always be inspected for leaks and proper flow before installing a rebuilt engine. Tec

Slav-nsk [51]

Answer:

Both the technicians are right so option C is correct

Explanation:

Both the technicians are right so option C is correct

while installing a rebuilt engine, it is necessary to inspect the leaks and proper flow because if there is leak then cooling oil will flow out of the engine which results in engine heating. Secondly flow should be proper otherwise the oil will not reach to all parts and may cause heating of some parts of engine.

If the cooling fan is defective it won't be suck enough heat from engine and it will also cause heating.

8 0

3 years ago