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A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the sun to push this solar sail. If a huge sail of area 6 x 10^5 m^2 and mass 6000 kg were placed into orbit and turned toward the sun, what would be the force exerted on the sail? (Assume a solar intensity of 1380 W/m^2)
How much longer does the trip take. Find out the acceleration of each mass and the tension in the string that connects them.
A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. how deep is the submarine
Two identical, small insulating balls are suspended by separate 0.36-m threads that are attached to a common point on the ceiling. obtain the tension in the threads
A metal wire of resistance 2.20 multiply.gif 10-8 omegacap.gif is cut into four equal pieces that are then connected side by side to form a new wire the length of which is equal to one-fourth the original length
an airplane travels 85 km,62degrees north of east. Its displacement is represented by the vector A in the drawing
There are 50x10^6 homes in the US. Each home has one light bulb which runs one hour per day. all have 75watt light bulbs. How much energy per year do they use for lighting
A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. It has a mass of 213 g. When placed in water, the block sinks. What volume of water did it displace.
The equations of force and motion objective questions.
Two ants race across a table 62.0 cm long. One travels at 4.69 cm/s and other at 3 cm/s. When the first one crosses the finish line, how far behind is second one? Reply in units of cm.
What is angular width of the beam
LASIK is a corrective surgical procedure intended to reduce a person's dependency on glasses or contact lenses by actually modifying the shape of the cornea, What is the average intensity during each pulse
A positive image distance means that image is formed on the side of the lens from which the light emerges.
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