How electricity is generated in fossil fuel power stations

1 answer:

6 0

Fossil fuel power plants burn carbon fuels such coal, oil or gas to generate steam that drives large turbines that produce electricity.

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Explain why your PE and KE are usually not both high at the same time (If PE is high then usually KE is low)

levacccp [35]

Answer:

An object can have both kinetic and potential energy at the same time. ... As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy. Another important concept is work.

Explanation:

5 0

3 years ago

Read 2 more answers

Approximate the field by treating the disk as a +6.1 C point charge at a distance of 21 cm Answer in units of N/C.

DaniilM [7]

Answer:

Electric field, $E=1.24\times 10^{12}\ N/C$

Explanation:

It is given that,

Charge, Q = +6.1 C

Distance, r = 21 cm = 0.21 m

We need to find the electric field. It is given by :

$E=k\dfrac{Q}{r^2}$

$E=9\times 10^9\times \dfrac{6.1}{(0.21)^2}$

$E=1.24\times 10^{12}\ N/C$

So, the electric field at this distance is $1.24\times 10^{12}\ N/C$ . Hence, this is the required solution.

7 0

3 years ago

7) Se calcula dividiendo distancia entre tiempo

sveta [45]

Answer:

A) Rapidez

Explanation:

Speed is a scalar quantity and it is found by dividing the distance traveled by the time taken.

Speed = $\frac{distance}{time}$

Distance is the length of path covered whereas time is the duration of the travel.

Unlike velocity which is a vector, speed is a scalar quantity with only magnitude but no direction.

5 0

3 years ago

If the back of the truck is 1.3 m above the ground and the ramp is inclined at 22 ∘ , how much time do the workers have to get t

solong [7]

Refer to the diagram shown below.

Assume that
(a) The piano rolls down on frictionless wheels,
(b) Wind resistance is negligible.

The distance along the ramp is
d = (1.3 m)/sin(22°) = 3.4703 m

The component of the piano's weight along the ramp is
mg sin(22°)
If the acceleration down the ramp is a, then
ma = mg sin(22°)
a = g sin(22°) = (9.8 m/s²) sin(22°) = 3.671 m/s²

The time, t, to travel down the ramp from rest is given by
(3.4703 m) = 0.5*(3.671 m/s²)*(t s)²
t² = 3.4703/1.8355 = 1.8907
t = 1.375 s

Answer: 1.375 s