Question
In: Physics
Problem 34.30The sun has a power output of 3.83 × 1026 W.Part AHow...
Problem 34.30 The sun has a power output of 3.83 × 1026 W. | |
Part A How many photons does the Sun emit each second? Assume that the average value of the wavelength of light emitted by the sun is 500 nm. N =photons per secondPart B Installed on your roof is a solar panel that has a surface area of 1.90 m2. How many photons from the Sun reach the panel? Assume in this part that the average value of the wavelength of light is 580 nm. Assume also that the sun emits photons equally in all directions and that photons are not scattered or absorbed by atmosphere on their way to the panel. Use the average Earth-Sun distance. |
Solutions
genius_generous answered 2 years agoRelated Solutions
What is the total power output of our Sun (i.e. the energy output per second)? (a)...
What is the total power output of our Sun (i.e. the energy
output per second)? (a) Assume all of power is released from
nuclear reactions, how much mass is the Sun currently losing every
second? (b) how many years would it take for the sun to lose 1% of
its total mass, if it keeps losing mass at the current rate?
How can I see that the the luminosity of the sun is 3.828×1026 W by looking...
How can I see that the the luminosity of the sun is 3.828×1026 W
by looking at the HR diagram?
The Sun radiates energy at a rate of about 4 × 1026 W. 1) At what...
The Sun radiates energy at a rate of about 4 × 1026 W.
1) At what distance from the Sun is its intensity the same as
that of a 100 W light bulb 1 m away from you?
2) How does that compare to the distance between the Sun and the
Earth?
3) Between which 2 planets’ orbits does this distance lie?
A nuclear power plant has an overall efficiency of 31% and a power output of 800MW....
A nuclear power plant has an overall efficiency of 31% and a
power output of 800MW. For one year operating at
full capacity, calculate a) the number of joules produced; b) the
number of fission events that were required to produce those
joules; c) the mass of uranium oxide (UO2) that has been
used in fission; and d) the market cost of that uranium oxide if it
was all high quality.
A steam power plant has two turbines in series which together develop a power output of...
A steam power plant has two turbines in series which together
develop a power output of 25MW. The boiler supplies steam at 80
bar, 500°C to the high-pressure turbine in which there is an
enthalpy drop of 420 kJ/kg. The exhaust from the high pressure is
at a pressure of 15 bar, at which pressure some of the steam is
delivered to an open-type feedwater heater while the remainder is
reheated to 450°C. The steam from the reheater is expanded...
Prob.1) Consider a combined gas and steam power plant that has a net power output of...
Prob.1) Consider a combined gas and steam power plant that has a
net power output of 450 MW. The pressure ratio of the gas turbine
cycle is 14. Air enters the compressor at 300 K and the turbine at
1 400 K. The combustion gases leaving the gas turbine are used to
heat the steam to 8 MPa. up to 400 ° C in a heat exchanger. The
combustion gases exit the heat exchanger at 460 K. An open
feedwater...
A combined gas turbine–vapor power plant has a net power output of 200 MW. Air enters...
A combined gas turbine–vapor power plant has a net power
output of 200 MW. Air enters the compressor of the gas turbine at
300 kPa, 1200 K, and is compressed to 1000 kPa. The pressure ratio
of the gas turbine cycle is 11. Steam leaving the turbine of the
vapor power cycle are used to heat the steam at 6 MPa to 350C in a
heat exchanger. The combustion gases leave the heat exchanger at
420 K. An open feedwater...
A pointer laser has an average output power of 0.9 mW and a beam diameter of...
A pointer laser has an average output
power of 0.9 mW and a beam diameter of 1.2 mm.
(a) What is the force exerted by the
laser beam on a perfectly reflecting surface ?
(b) Is this force much
larger, smaller, or about the same compared to
the weight of a 0.1 gram drop of water ( 1x10-4x9.8 =
9.8x10-4 Newton )
(c) What is the rms electric field
produced by this laser ?
Problem 4. A high-voltage power supply should have a nominal output voltage of 350 V. A...
Problem 4. A high-voltage power supply should have a nominal
output voltage of 350 V. A sample of four units is selected each
day and tested for process-control purposes. The data (see sheet
Problem4 in Homework 4.xlsx) give the difference between the
observed reading on each unit and the nominal voltage times ten;
that is, ?? = (observed voltage on unit ? - 350)*10 (a) Set up ?̅
and ? charts on this process. Is the process in statistical
control?...
A neighborhood fuel cell power plant is to be designed for an electric power output of...
A neighborhood fuel cell power plant is to be designed for an
electric power output of 2000 kW with liquid– water product.
Estimate the flow rates of hydrogen and oxygen during peak power
production, assuming an 80% efficient power conditioner is used to
convert DC to AC power and the fuel cell efficiency is 55%. What is
the plant heat rate?
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