Assuming the earth is a perfect absorber, what is the force of the sun's radiation on the earth? Given the intensity of the sunlight on the earth is I, the earth-sun distance is R and the radius of th earth is r. Only answer with the given variables
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Assuming the earth is a perfect absorber, what is the force of the sun's
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- what is the total power P radiated by the sun given the inensity of sunlight at the earth if I, the earth sun distance is R and the radius of the earth is r. Do not include any other values besides those listedSuppose a hot object radiates with the twice the intensity as the sun on earth, i.e. 2600W/m2. What is the energy density of this radiation?Radiation heat transfer coefficient means the ability of particle to transfer heat in solid. (True or False) O True O False Heat and temperature are a not vector quantity. (True or False) O True O False
- The prefix “mega” (M) and “kilo” (k), when referring to amounts of computer data, refer to factors of 1024 or 210 rather than 1000 for the prefix kilo, and 10242 = 220 rather than 1,000,000 for the prefix Mega (M). If a wireless (WiFi) router transfers 150 Mbps of data, how many bits per second is that in decimal arithmetic?Is your textbook the kind of idealized object (described in section on radiation laws) that absorbs all the radiation falling on it? Explain. How about the black sweater worn by one of your classmates?During X-ray diagnostics, lead aprons made of a thin layer of lead are used in order to protect against the harmful effects of X-ray radiation. Determine, by what factor is the intensity of X-ray radiation reduced after passing the apron of thickness 1 mm. The mass attenuation coefficient for a radiation source with an energy of 140 keV is µm= 2 cm²/g. Density of lead p=11.35 g/cm³.
- Weight of the ozone layer 1.0p 1 Incredibly, the ozone layer in the upper atmosphere that protects us from the ultraviolet rays of the Sun varies somewhat but, on the average, would be less than one centimeter thick if it were brought down to sea level. Given that the density of ozone at sea level would be about 2.0 grams per litre, what is the total amount of ozone (in Tonnes) in the upper atmosphere when its sea-level thickness is 0.22 cm? Take the radius of the Earth to be 6400 km. (The volume of a thin skin around an object is the surface area of the object times the skin thickness.) Give your answer in gigatonnes, and do not specify units in the answer box. Answer Show feedback Updated just now 4The conductivity of a plasma is purely imaginary given by o = ioo. Therefore, J = ioo E If the electric field is given by 'E('x, t) = Ee¹(kz-t)^i, find its associated magnetic field.if 0=300 between A¯and B find q value? A¯=2î +2f +4k , B`=qî +ĵ -2K
- I need help with C) my answer of-192 is in correct Suppose that while pumping up a bike tire, we fairly rapidly compress 1900 cm3 of air from atmospheric pressure and room temperature to a pressure of about 5 atm (which is about 60 psi above atmospheric pressure, which is what a tire gauge would read). (a) What is this packet of air’s volume as it enters the tire? The volume of the packet of air is _601.85cm3. (b) What is its final temperature? The final temperature is 475 K. (c) How much work did we do to compress it? The work done to compress air is _______J.Assume solar flux falling on a typical panel on planet earth to be 1370 Watts per square meter with sunshine at least half of the year and roughly one quarter of the earth surface bathed in sunlight daily as the planet rotates. The best panels convert photonic energy to electrical energy at about 25 % (efficiency). Given that the world consumes around 600 exaJoules (one exaJ = 1028 J) how much area would be required to power up the world with solar arrays. (Give your answer in square kilometers please!)Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening forthe characteristic “buzzing” frequency of the female’s wing beats.This frequency is about 605 wing beats per second. (a) How manywing beats occur in one minute? (b) How many cycles of oscillation does the radiation from a cesium-133 atom complete duringone mosquito wing beat?
