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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)
A rotating cylinder about 25 km long and 9 km in diameter is designed to be used as a space colony. with what angular speed must it rotate so that residents on it would experience the same acceleration due to gravity as on earth? In radians per se..
You're designing a speaker, and you want the tweeter to handle almost everything above 1100 Hz, and woofer to handle almost everything below Hz. Find the capacitance that satisfies the design criteria
How much work is done by an applied force that moves two charges of +5.0 µC that are initially very far apart to a distance of 4.6 cm apart?
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
The magnetic field in a solenoid is B = (µ0NI) / d. A circular wire of radius 10 cm is concentric with a solenoid of radius 7 cm, What is the non-Coulomb electric field in the wire
An electron gun inside a computer monitor sends an electron toward the screen at a speed of 1.20 × 108 m/s. what is the magnitude of its relativistic momentum
A common flashlight bulb is rated at 0.300 A and 2.60 V, what is the temperature of the filament when the bulb is on? Calculate in deg Celsius
an experiment is set up in which a red laser with a wavelength of 656.2m is directed through a large, irregularly shaped piece of synthetic material. What is the index of refraction of the synthetic material
Calculate the magnitude and direction of net electric field. what is the efficiency of the engine under those conditions.
A parallel plate capacitor has square plates with sides of length 10 cm. The distance between the plates is 4 mm. What is the amount of charge on each plate
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
You throw a ball with mass 0.40 kg against a brick wall. It hits the wall moving horizontally to the left at 30. m/s, find the average horizontal force the wall exerts on the ball during the impact
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