Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
One goal of the Russian space program is to illuminate dark northern cities by sunlight reflected to the Earth from a200 m diameter mirrored surface in orbit. Several smaller prototypes have already been constructed and put into orbit.
1) Assume that sunlight with intensity 1340W/m2 falls on the mirror nearly perpendicularly and that the atmosphere of the Earth allows 83.3% of the energy of sunlight to pass though it in clear weather. What is the power received with a city when the space mirror is reflecting light to it?
2) The plan is for the reflected sunlight to cover a circle of diameter 8.00 km. What is the intensity of light (the average magnitude of the Pointing vector) received by the city?
3) This intensity is what percentage of the vertical component of sunlight at St. Petersburg in winter, when the sun reaches an angle of 8.80°above the horizon at noon?
A newly discovered planet has a mean radius of 2020 km. A vehicle on the planet\'s surface is moving in the same direction as the planet\'s rotation, what is the period of the planet\'s rotation
Suppose that earth grew to its present size in 10 million yearsthrough the accretion of particles averaging 100 g each. On theaverage, how many particles did did earth capture per second
a single phase 60 hz source supplies a 90 kva 0.8 power factor lagging load through a transmission line with impedance
A 10 N force is applied to a wheel with a radius of 3 cm causing an acceleration of 12 rad/s2. Through what tangential distance did it turn in 5 seconds if it started from rest
Silver has a resistivity of 1.62×10^?8 ?m, and a density of 1.05×10^4 kg/m3. What is L? 2.At 20.0 °C, a mainly silicon resistor has a resistance of 585 ?, At what temperature will their resistances be equal
zyton corp. budgets production of 292 units in january and 264 units in february. each finished unit requires five
A 0.85 kg mass attached to a vertical spring of force constant150 N/m oscillates with a maximum speed of v = 0.35 m/s. Find the amplitude of the motion
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.170 .
Assuming the density of seawater is 1.03 g/cm3, find the total weight of water on top of a nuclear submarine at a depth of 155 m, what water pressure would a diver experience at this depth
two circular disks spaced 0.50mm apart form a parallel-plate capacitor. transferring 1.80x109 electrons from one disk
A NASCAR racecar rounds one end of the Martinsville Speedway. what is the racecar\'s centripetal (radial) acceleration
Some asteroid named "Briggie" has been discovered revolving around the Sun on a circular orbit with a period of 3.90 years. What is the radius of Briggie's orbit
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd