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2 years ago

Which energy output objects work with the turbine

Physics

1 answer:

viktelen [127]2 years ago

6 0

Answer:

The energy output object that works with the turbine is the alternator (generator)

Explanation:

In energy generation the turbine receives input energy from high pressured steam, high energy water etc. Which impinges and turn the blades of the turbine, this turbine is connected by means of a shaft to the alternator that converts the rotational motion of the shaft to electrical energy through Electro magnetic induction principles and also outputs the energy for consumption.

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What lasts longer and why?: A solar eclipse or a lunar eclipse?

Liono4ka [1.6K]

Lunar eclipse can lasts longer because it lasts around 3 hours but can last as long as four hours. Solar eclipse last shorter than lunar eclipse because the moon only creates a small shadow on the earth and the moon travels through the suns vision (as seen on earth) in a short amount of time.

5 0

2 years ago

Help please thank you whoever helps

Delicious77 [7]

Answer:

24a. WX, XW

24b. XY

24c. WV

24d. UV, VU

24e. XY, YX

24f. YX

24g. VW

24h. YZ, ZY

24i. VW, WV

24j. WX

25a. ≈ 20°C

25b. ≈ 290°C

25c. ≈ 20°C

25d. ≈ 290°C

Explanation:

Let's look at the graph and see what phase changes happen as we go from U to Z.

UV: the substance is a solid. As heat is added, temperature increases.

VW: the solid begins to melt. The temperature stays constant as the combination of solid and liquid becomes more and more liquid.

WX: the solid is done melting, and there's only liquid now. As heat is added, temperature increases.

XY: the liquid begins to boil. The temperature stays constant as the combination of liquid and gas becomes more and more gas.

YZ: the liquid is done boiling, and there's only gas now. As heat is added, temperature increases.

If we reverse the direction, YX represents condensation instead of boiling, and WV represents freezing instead of melting.

Kinetic energy of molecules increases with temperature. The greatest increase in temperature is also the greatest increase in kinetic energy.

8 0

2 years ago

A water wave traveling in a straight line on a lake is described by the equation

ivanzaharov [21]

Answer:

A) The wave equation is given as

$y(x,t) = A\cos(kx + \omega t)=(3.3\times 10^{-2})\cos(0.004x + 5.05t)\\$

According to the above equation, k = 0.004 and ω = 5.05.

Using the following identities, we can find the period of the wave.

$\omega = 2\pi f\\ f = 1/ T$

T = 1.25 s.

For the horizontal distance travelled by one period of time, x = λ.

$\lambda = 2\pi / k = 2\pi / 0.004 = 1.57\times 10^3~m$

$y(x = \lambda,t = T) = 0.033\cos(0.004*1.57*\10^3 + 5.05*1.25) = 0.033~m$

B) The wave number, k = 0.004 . The number of waves per second is the frequency, so f = 0.8.

C) The propagation speed of the wave is

$v = \lambda f = 1.57\times 10^3 * 0.8 = 1.256\times 10^3~m/s$

The velocity of the wave is the derivative of the position function.

$v(x,t) = \frac{dy(x,t)}{dt} = -(5.05\times 0.033)\sin(0.004x + 5.05t)$

The maximum velocity is when the derivative of the velocity function is equal to zero.

$\frac{dv_y(x,t)}{dt} = -(5.05)^2(0.033)\cos(0.004*1.57\times 10^3 + 5.05t) = 0$

In order this to be zero, cosine term must be equal to zero.

$0.004*1.57\times 10^3 + 5.05t = 5\pi /2\\t = 0.31~s$

The reason that cosine term is set to be 5π/2 is that time cannot be zero. For π/2 and 3π/2, t<0.

$v(x=\lambda, t = 0.31) = -(5.05\times0.033)\sin(0.004\times 1.57\times 10^3 + 5.05\times 0.31) = -0.166~m/s$

6 0

3 years ago

A speed-time graph shows a car moving at 10 m/s for 10 s. The cars speed constantly decreases until it comes to a stop at 30 s.

Ray Of Light [21]

speed of the car at t = 10 s is given as 10 m/s

now at t = 30 s car comes to rest so v = 0

now in this velocity time graph we can say slope will show the acceleration of the car as we know that acceleration is rate of change in velocity

$a = \frac{v_f - v_i}{\Delta t}$

as we know that

$v_f = 0$

$v_i = 10 m/s$

$\Delta t = (30 - 10) = 20 s$

now from above formula

$a = \frac{0 - 10}{20} = -0.5 m/s^2$

So slope of the graph will represent the acceleration of car which is 0.5 m/s^2

5 0

3 years ago

Read 2 more answers

When an objects total mechanical energy is conserved and it is dropped from rest how does the objects initial potential energy c

frozen [14]

Answer:Magnitude of potential energy before falling will be equal to the magnitude of the final kinetic energy, energy is only converted from potential to kinetic

Explanation: law of conservation of energy says that energy can neither be created or destroyed but Change from one form to another.so nothing will happen to the size of the potential energy when it changes to kinetic energy

8 0

2 years ago