Question

In: Physics

An approximately spherical, black asteroid (emissivity equal to one) of diameter 2km is orbiting the sun...

An approximately spherical, black asteroid (emissivity equal to one) of diameter 2km is orbiting the sun at a distance from the sun 10 times larger than the distance from the sum to the earth

a) What is the tempature of this asteroid?

b) What is the wavelength of radiation it emits with maximum intersity?

c) What rediation intersity emitted by the asteroid would be observed on Earth (when the asteroid makes its closet approach, assuming a circular orbit)?

Solar constant (solar power per unit area measured above the earth's atmosphere is 1400 W/m^2).

Distance from the Sun to the Earth is 1.5*10^11m

Solutions

Expert Solution


Related Solutions

The asteroid belt circles the sun between the orbits of Mars and Jupiter. One asteroid has a period...
The asteroid belt circles the sun between the orbits of Mars and Jupiter. One asteroid has a period of 5.0 earth years. Assume a 365.25-days year and MSun = 1.99 × 1030 kg. 1. What is the asteroid's orbital radius? Express your answer in two significant figures. 2. What is the asteroid's orbital speed? Express answer in two significant figures.
A spherical motile bacteria with a radius of 1.0 microns and a density approximately equal to...
A spherical motile bacteria with a radius of 1.0 microns and a density approximately equal to water is swimming in water (temperature 20 C) at a speed of 8.0 microns per second. The bacteria suddenly stops swimming. Since the Reynolds number for a swimming bacteria is small, it should experience Stokes drag (F?D? = 6????Rv). (a) How long (in seconds) does it take the bacteria to come to a “complete” stop? We’ll define a “complete” stop to be when the...
Approximately spherical particles of diameter 150? and density 2650 kg/m3 settle through a liquid of density...
Approximately spherical particles of diameter 150? and density 2650 kg/m3 settle through a liquid of density 1097 kg/m3 and dynamic viscosity 3.8 mPa s. The volume fraction of particles is 30% in a container of internal diameter 2 cm Calculate: a)The absolute settling velocity that is apparent to the stationary observer in the lab frame. b)The slip velocity (Us) between solid and liquid phases. c) The superficial velocity of the particles in the lab frame.
1-Pupils should be black in color, equal in size, normally 3-7 mm in diameter and have...
1-Pupils should be black in color, equal in size, normally 3-7 mm in diameter and have smooth border. -true -false 2-cilyball whist In order to assess the client respiratory system especially if he or she is suspected to have extra fluid around or inside lungs, we ask the client to repeat such words as "blue moon" or "one, two, three'. The terminology used to describe this technique is a. Respiratory auscultation. b. Tactile fremitus. C. Thoracentesis. d. Respiratory excursion. 3-The...
1. An 8-inch diameter (I.D.) pipe is filled to a depth equal to one-third of its...
1. An 8-inch diameter (I.D.) pipe is filled to a depth equal to one-third of its diameter. What is the area in flow? 2. Find the area of a washer formed by two concentric circles whose chord outside the small circle is 10 cm. 3. A goat is tied to a corner of a 30 ft by 35 ft building. If the rope is 40 ft. long and the goat can reach 1 ft. farther than the rope length, what...
How much 1.0 mm diameter copper wire would it take to equal the resistance of one...
How much 1.0 mm diameter copper wire would it take to equal the resistance of one 100 Ω resistor? The resistivity of copper is 1.68*10-8 Ωm b) What would be the current if this wire was connected to a 12.0 V battery? c) How many electrons per second pass by a point on the wire? d) If this wire was coiled up and submerged in 100 mL of water at 20oC, how long would it take for the water to...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT