physic
The sunlight that reaches Earth has an intensity of 1350 watts per square meter. The distance from the Earth to the Sun is 150 million kilometers. Saturn is ten times as far away from the Sun. (a) Calculate the total power of sunlight radiated by the Sun. (b) Calculate the rms values of the electric and magnetic fields of sunlight at the orbit of Saturn. (c) Calculate the energy density and intensity of sunlight at Saturn. (c) Saturn has a diameter of 116,460 km. What would be the net force of sunlight on Saturn if the light were perfectly absorb
Homework Answers
We will put the hint into effective use-
Since Saturn is at a distance of 10 AU and Earth is at a distance of 1 AU from the sun, and the flux is inversely proportional to the square of the distance
So as D becomes 10 times more as compared to Earth, the flux that Saturn receives should be scaled down by a factor of 100 (10 squared). Since Earth receives 1362 Watts per meter square so this implies that Saturn receives 1362/100 = 13.62 Watts per meter square of flux from the Sun.
Please show step by step. The answers are: a) ???????? = 1.54 W/ m2 b) ℙ...
Please show step by step.
The answers are:
a) ???????? = 1.54 W/ m2
b) ℙ = 3.93 × 1026 W
4. The Earth has a radius of 6.38x10m and is 1.50x101m from the sun. The intensity of sunlight at Earth's orbit is 1390W/m2 a) What is the intensity of sunlight at Neptune's orbit, a distance of 4.5x101m from the sun? b) What is the total power radiated by the Sun?
One goal of the Russian space program is to illuminate dark northern cities with sunlight reflected...
One goal of the Russian space program is to illuminate dark northern cities with sunlight reflected to the Earth from a 200 m diameter mirrored surface in orbit. Several smaller prototypes have already been constructed and put into orbit. (a) Assume that sunlight with intensity 1340 W/m2 falls on the mirror nearly perpendicularly and that the atmosphere of the Earth allows 78.3% of the energy of sunlight to pass though it in clear weather. What is the power received by...
Sunlight at the radius of Earth’s orbit away from the sun contains 1370W atts/m2 (this is...
Sunlight at the radius of Earth’s orbit away from the sun contains 1370W atts/m2 (this is called the solar constant and is a very important constant for climate science). i.e. Every second, 1370J of sunlight fly through a square of size 1m2. The Earth has an albedo of 0.3. This means that 30% of the energy gets re- flected back into space. For symplicity, we can assume that the a square meter of the Earth facing the sun absorbs 1000J...
please help me to solve this two problem and explain, thanks a lot! 13.21 (a) The...
please help me to solve this two problem and explain, thanks a
lot!
13.21 (a) The orbit of Comet Halley. (b) Comet Halley as it appeared in 1986. At the heart of the comet is an icy body, called the nucleus, that is about 10 km across. When the comet's orbit carries it close to the sun, the heat of sunlight causes the nucleus to partially evaporate. The evaporated material forms the tail, which can be tens of millions of...
The surface of the Sun has a temperature of 5500 ∘C. Treat the sun as a...
The surface of the Sun has a temperature of 5500 ∘C. Treat the sun as a perfect blackbody with an emissivity of 1.0 and a radius of 7.0*10^8 m. Given; the temperature of space is 3.0K and the power that it takes for the sun to radiate into space is 3.9 * 10^26 W. The solar constant is the number of watts of sunlight power falling on a square meter of the Earth's upper atmosphere. Calculate the solar constant given...
Electric and Magnetic Field of Light There is a light wave traveling through a vacuum with...
Electric and Magnetic Field of Light There is a light wave traveling through a vacuum with an Magnetic Field that has a peak value of By - 5.50 x 10 What is the value of the peak of the electric field (Eol? Make sure to put units with your answer as well as appropriate significant figures Your Answer Answer units Pressure and Intensity The Sun has a power of P-3.85 x 1026 Watts. The Earth is a distance of ſon...
Solar radiation still has an intensity of 1367 watts per square meter at the top of...
Solar radiation still has an intensity of 1367 watts per square meter at the top of Earths atmosphere, and Earth has a radius of 6370 km. How many photons hit Earth per second? You may assume that all of the photons are at the sun’s peak wavelength, 500 nm.
A possible means of space flight is to place a perfectly reflecting aluminized sheet into orbit a...
A possible means of space flight is to place a perfectly reflecting aluminized sheet into orbit around the Earth and then use the light from the Sun to push this "solar sail." Suppose a sail of area A 5.9010 m2 and mass m 4,800 kg is placed in orbit facing the Sun. Ignore all gravitational effects and assume a solar intensity of 1,370 W/m2 (a) What force (in N) is exerted on the sail? (Enter the magnitude.) 4.47 If you...
= 3.90 x 1026 W). Neglecting any atmospheric absorption, we want to find the rms values...
= 3.90 x 1026 W). Neglecting any atmospheric absorption, we want to find the rms values of the electric and magnetic fields when the starlight reaches us. (Psun When we look at the North Star (Polaris), we intercept light from a star at a distance of 431 ly and emitting energy at a rate of 2.2 x 103 times that of our Sun KEY IDEAS 1. The rms value Ems of the electric field in light is related to the...
6. Given that the distance to the Moon is 384000 km, and taking the Moon’s orbit...
6. Given that the distance to the Moon is 384000 km, and taking the Moon’s orbit around Earth to be circular, estimate the speed (in kilometers per second) at which the Moon orbits the Earth. 7. The baseline in Figure 0.19 in the textbook is 100 m and the angle at B is 60 degrees. Using the tangent function, calculate the distance from A to the tree Ch. 1 Discussion Questions 2. The benefit of our current knowledge lets us...
Please show step by step.
The answers are:
a) ???????? = 1.54 W/ m2
b) ℙ = 3.93 × 1026 W
4. The Earth has a radius of 6.38x10m and is 1.50x101m from the sun. The intensity of sunlight at Earth's orbit is 1390W/m2 a) What is the intensity of sunlight at Neptune's orbit, a distance of 4.5x101m from the sun? b) What is the total power radiated by the Sun?
One goal of the Russian space program is to illuminate dark northern cities with sunlight reflected to the Earth from a 200 m diameter mirrored surface in orbit. Several smaller prototypes have already been constructed and put into orbit. (a) Assume that sunlight with intensity 1340 W/m2 falls on the mirror nearly perpendicularly and that the atmosphere of the Earth allows 78.3% of the energy of sunlight to pass though it in clear weather. What is the power received by...
please help me to solve this two problem and explain, thanks a
lot!
13.21 (a) The orbit of Comet Halley. (b) Comet Halley as it appeared in 1986. At the heart of the comet is an icy body, called the nucleus, that is about 10 km across. When the comet's orbit carries it close to the sun, the heat of sunlight causes the nucleus to partially evaporate. The evaporated material forms the tail, which can be tens of millions of...
Electric and Magnetic Field of Light There is a light wave traveling through a vacuum with an Magnetic Field that has a peak value of By - 5.50 x 10 What is the value of the peak of the electric field (Eol? Make sure to put units with your answer as well as appropriate significant figures Your Answer Answer units Pressure and Intensity The Sun has a power of P-3.85 x 1026 Watts. The Earth is a distance of ſon...
A possible means of space flight is to place a perfectly reflecting aluminized sheet into orbit around the Earth and then use the light from the Sun to push this "solar sail." Suppose a sail of area A 5.9010 m2 and mass m 4,800 kg is placed in orbit facing the Sun. Ignore all gravitational effects and assume a solar intensity of 1,370 W/m2 (a) What force (in N) is exerted on the sail? (Enter the magnitude.) 4.47 If you...
= 3.90 x 1026 W). Neglecting any atmospheric absorption, we want to find the rms values of the electric and magnetic fields when the starlight reaches us. (Psun When we look at the North Star (Polaris), we intercept light from a star at a distance of 431 ly and emitting energy at a rate of 2.2 x 103 times that of our Sun KEY IDEAS 1. The rms value Ems of the electric field in light is related to the...
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