Of waterfalls with a height of more than 50 m , Niagara Falls in Canada has the highest flow rate of any waterfall in the world. The total average flow rate of the falls is 2.80×10³ m³/s and its average height is 52.0 m (Niagara Falls Live, 2017). Given that the density of water is 1.00×10³ kg/m³, calculate the average power output of Niagara Falls.Average power output: _________.
Answers
The height of more than 50 m then the average power output of Niagara Falls will be equal to 426.9 MW.
What is Power?
Power can be defined as the amount of workcompleted in a given amount of time. Watt (W), which is derived from joules per second (J/s), is the SI unit of power. Horsepower (hp), which is roughly equivalent to 745.7 watts, is a unit of measurement sometimes used to describe the power of motor vehicles and other devices.
Average power is calculated by dividing the total energy used by the total time required. The average quantity of work completed or energy converted per unit of time is known as average power.
The change in potential energy of the falls mostly determines its power output:
Q = -ΔP = -(P2 - P1)
Use the equation of Potential energy:
P = mgh
If we take the base of the falls as the reference height, the height at point 1 is 52 meters, and at point 2 h=0, P2=0,
Q = P1 = mgh
The rate of change in potential energy over time can be calculated by substituting the mass rate M for m. As a result, the power produced:
W = mgh
W = 2.8 × 10³ × 1 × 10³ × 9.8 × 52
W = 1426.9 MW.
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Answer:
Power output: W=1426.9MW
Explanation:
The power output of the falls is given mainly by its change in potential energy:
The potential energy for any point can be calculated as:
If we consider the base of the falls to be the reference height, at point 2 h=0, so P2=0, and height at point 1 equals 52m:
If we replace m with the mass rate M we obtain the rate of change in potential energy over time, so the power generated:
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Visible satellite images record visible light coming from the sun that is reflected by clouds, land, oceans or snow and ice.
There is a big difference between visible and infrared images since visible images record reflected light rather then emitted radiation.
student's percent error? *
A) .0256%
B) 2.56%
C) 2.63%
D) .0263%
Answers
Answer:
2.63 %.
Explanation:
Given that,
The calculated value of the specific heat of water is 4.29 J/g.C
Original value of specific heat of water is 4.18 J/g.C.
We need to find the student's percent error. The percentage error in any quantity is given by :
So, the student's percent error is 2.63 %.
The student's percent error in measuring the specificheat of water is 2.63%.
The specificheat is the amount of heat required to increase the temperature of 1 kg of mass by 1 degree Celsius.
Given:
Experimental Value = 4.29 J/g°C (student's measured value)
Accepted Value = 4.18 J/g°C (literature value)
The percent error can be calculated using the formula:
Percent Error = ((Experimental Value - Accepted Value) / Accepted Value)×100
Substitute the given values in the above formula and calculate the percenterror:
Percent Error = [(4.29 - 4.18) / 4.18] × 100
Percent Error = (0.11 / 4.18) × 100
Percent Error = 2.63%
The student's percent error in measuring the specificheat of water is approximately 2.63%.
Therefore, the student's percent error in measuring the specific heat of water is 2.63%.
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Answers
As it was categorized in the physics category it must be the mechanical power.
Power is basically the amount of work done per unit time or in simpler words the amount of energy transferred per unit time.
The SI unit for power is Watt. Which is basically J/s or Nm/s as wor has the unit of Nm.
In electrical components power can also be categorized as the amount voltage supplied multiplied by the current passed through the component.
Since you put your question in the <Physics> category, I'll assume
you're talking about mechanical or electrical power, and not political
or military power etc.
Power is the rate of doing work or moving energy from one place
to another.
In mechanical contraptions, Work is (force) x (distance) ,
so
Power = (work) divided by (time)
or = (force) x (distance) divided by (time).
In electrical circuits,
Power = (voltage) x (current)
or = (current)² x (resistance)
or = (voltage)² divided by (resistance) .
(Just use the formula with whatever quantities you know.)
Answers
Answer:
Gamma rays
Explanation:
Gamma rays are usually defined as a type of electromagnetic radiations, that are characterized by the presence of shorter wavelength and higher energy. These are the common radiations that are released from the radioactive substances, where an unstable nucleus of an atom releases an excess amount of energy by undergoing continuous electromagnetic processes.
These are harmful to humans and other organisms, as they are comprised of very high energy and they can easily penetrate through the bodies of humans and other organisms.
These gamma particles are emitted in the power plants, where the people working in it wear a special type of device that helps them in monitoring the exposure to radiation.
It could also be gamma rays i don't really know
Answers
I hope I helped! =D
Answers
Final answer:
The student's question lacks an image, so a specific model can't be identified. However, a common model of Earth's interior includes four parts: the crust, mantle, outer core, and inner core. Each of these parts have distinct characteristics and they are made up of different materials.
Explanation:
Unfortunately, I'm not able to identify the specific model of Earth's interior based on your question as it doesn't include an image for me to review. However, I can tell you that commonly used models include the crust, mantle, outer core, and inner core model, based on our current understanding of geology. The crust is the surface layer, followed by the mantle which is the largest part of Earth's interior. Below the mantle are the outer core and the inner core, which are primarily made up of iron and nickel and exhibit different physical properties.
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