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Let the mass of the star be 1.98e30 kilogram and the power be 8.52e27 Watt. The universal gravitational constant is 6.6726e-11 Nm^2/kg^2 and speed of light is 3e8 m/s. The density of the black particle is 1.85 g/cm^3. If the force due to the radiation pressure exactly cancels the force due to gravity, find what is the radius of this particle is micrometer.
Calculating plants maximum possible thermal and actual efficiency.
A circular wire loop whose radius is 10.0 cm carries current of 2.10 A. Calculate the magnetic dipole moment of the loop
A 2084 Kg car moving with an initial speed of 65 mph along ahorizontal road skids to a complete stop in 12.8 seconds, find the work done on the car by the force of Kinetic Friction
A beam of unpolarized light of intensity 12.o w/m^2 is incident on an ideal linear polarizer, P1, whose transmission axis is in the vertical (y) direction, What is the intensity of light emerging from P1
a copper penny has a mass of 3.1 g. being electrically neutral it contains equal amounts of positive and negative
A meterstick of negligible mass has a 0.25 kg mass at its 31 cm mark and a 0.40 kg mass at the 77 cm mark. Where should the fulcrum be so the meterstick is balanced
question a 4.2 kg rectangular air mattress is 2.7 m long 0.653 m wide and 0.167 m thick. what mass can it support in
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
A radio wave transmits 16.7 W/m2 of power per unit area. A flat surface of area A is perpendicular to the direction of propagation of the wave. Assuming the surface is a perfect absorber, calculate the radiation pressure on it. nPa
Light of wavelength 461 nmfalls on two slits spaced 0.330 mm apart. What is the required distancefrom the slit to a screen if the spacing between the first andsecond dark fringes is to be 4.20 mm?
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 59° above the horizontal. how far is this point horizontally from the end of the ramp
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