A wind turbine takes in energy from wind with the goal of converting it into electrical energy. Much of the wind energy is also
1 answer:
The efficiency of the turbine is 50%.
The given parameters:
- <em>Kinetic energy of the wind, E = 3000 J</em>
- <em>Output electrical energy, E(out) = 750 J</em>
- <em>Energy lost to heat, E(lost) = 750 J</em>
- <em>Kinetic energy of the turbine, E(in) = ?</em>
The kinetic energy of the turbine which is the input energy is calculated as follows;
E(in) = 3000 - (750 + 750)
E(in) = 1500 J
The efficiency of the turbine is calculated as follows;
Thus, the efficiency of the turbine is 50%.
Learn more about efficiency of turbine here: brainly.com/question/2009210
You might be interested in
Answer:
Explanation:
Given height of lamp from the ceiling = 2.6m
mass of the lamp = 3.8kg
acceleration due to gravity = 9.81m/s²
As the body falls to the ground, it falls under the influence of gravity.
Gravitational potential energy = mass*acc due to gravity * height
Gravitational potential energy = 3.8*2.6*9.81
Gravitational potential energy = 96.923 Joules
b) Kinetic energy = 1/2 mv²
m = mass of the body (in kg)
v = velocity of the body (in m/s²)
To get the velocity v, we will use the equation of motion
Since mass = 3.8kg
c) To know how fast the lamp is moving when it hits the ground, we will use the formula. When the body hits the ground, the height covered will be 0m. this means that the body is not moving once it hits the ground. It stays in one position. The energy possessed by the body at this point is potential energy. The correct answer is therefore 0 m/s
Answer:
The magnitude is "3.8 m/s²", in the upward direction.
Explanation:
The given values are:
Mass,
m = 88 kg
Scale reads,
T = 900 N
As we know,
⇒
On substituting the given values, we get
⇒
⇒
Now,
⇒
On substituting the given values in the above equation, we get
⇒
On subtracting "862.4" from both sides, we get
⇒
⇒
⇒
⇒ (upward direction)