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The sun produces about 3.8 x 1026 W of electromagnetic radiation. The mass of the sun is 1.99 x 1030 kg. Consider a solar sail that has an area of 45.0 m2. The sail is perfectly reflecting at all wavelengths. Assume that the sail is 1.00 mm thick. Find the maximum density (e.g. kg/m3) that the sail could have and still experience a net outward force due to the radiation pressure from the sun. Show that this value does not depend on the distance from the sun. Compare the answer you get to the density of water (1000 kg/m3) and comment on whether or not a 1mm thickness is reasonable for a possibly working solar sail. If you had to design a solar sail, which thickness would you choose? Which material would you use?
in the produce section of a supermarket, five pears are placed on a spring scale. The placement of the pears stretches the spring and causes the dial to move from zero to a reading of 2.0kg. If the spring constant is 450 n/m, what is the displacement..
A cardinal (Richmondena cardinalis) of mass 4×10-2 kg and a baseball of mass 0.143 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p_c of momentum to the magnitude p_b of the baseball's momentum.
What is the magnitude of the horizontal net force. An 845-N sled is pulled a distance of 168 m. The task requires 1.20 multiplied by 104 J of work and is done by pulling on a rope with the force of 121 N. At what angle is the rope held.
If the bar has mass of 200g, a length of 15 cm, and th magnetic field has a magnitude of 0.2T, what must be the minimum current(direction and magnitude) to lift the bar
A disk on the ground has a mass1 sitting on it at a distance of r1 from the center. It is rotating at a constant rate. The weight has a velocity v1. What is the smallest time of revolution mass 1 can have without flying off
A 800 kg rocket sled can be accelerated at a constant rate from rest to 1300 km/h in 2.4 s. What is the magnitude of the required net force
two diffraction gratings a and b are located at the same distance from the observation screens. light with the same
A 4.9-N hammer head is stopped from an initial downward velocity of 3.2 m/s in a distance of 0.45 cm by a nail in a pine board. Calculate the downward force F exerted by the hammer head on the nail while the hammer head is in contact with the nail a..
a train travels due south at32 msrelative to the ground in a rain that is blown toward the south by the wind. the path
an object 5.00 mm tall is placed 6.00 cm to the left of a converging lens of focal length 20.0 cm.a how far away from
The torque needed to loosen a bolt has a magnitude of .5Nm. What is the or that should b applied to the end of a 14cm long wretch to accomplish this?
The truncated form of the virial equation is P(VB) = RT , where B is a constant that depends only on temperature. Derive the expression for reversible isothermal work for a gas that obeys this equation of state.
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