In the grapefruit model of the solar system, it would take a few minutes to walk from the Sun to the inner edge of the Kuiper Belt (Pluto)
Indicate whether the statement is true or false
TRUE
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Using the Rayleigh Criterion for 400. nm light, what sized space telescope could have 1.0 km resolution of objects on Mars when viewed from above the Earth? (assume an Earth-Mars close distance of 80. million km)
A) 3.9 m B) 39. m C) 3.9 km D) 0.39 km E) 39. km
A straight 10-cm wire bent at its midpoint so as to form an angle of 90° carries a current of 10 A. It lies in the xy plane in a region where the magnetic field is in the positive z direction and has a constant magnitude of 3.0 mT. What is the magnitude of the magnetic force on this wire?
A. 3.2 mN B. 2.1 mN C. 5.3 mN D. 4.2 mN E. 6.0 mN
Text, images, and links that establish the website's value are used to answer a website visitor's ______ question.
A. Who? B. What? C. Why? D. Where?
A Carnot cycle is operated in reverse as a refrigerator taking in 36. J every minute and "dumping" 40. J per minute at a room temperature of 23.°C. The net entropy increase per minute is
A) 0.13 J/°K B) 36.J/°K C) 0.15 J/°K D) zero E) 0.15 kJ/°K