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Suppose that the concentration of infrared-absorbing gases in earth's atmosphere were to double, effectively creating a second "blanket" to warm the surface. Estimate the equilibrium surface temperature of the earth that would result from this catastrophe. (Hint: First show that the lower atmospheric blanket is warmer than the upper one by a factor of 21/4. The surface is warmer than the lower blanket by a smaller factor.)
Wool is rubbed against a plastic ruler. If the plastic ruler acquires a charge of -5 µC, how many electrons have been transferred to the ruler
in may 2008 the united states successfully landed a spacecraft named phoenix near the northern polar regions of mars.
Imagine that the cannon from Problem #1 is actually firing into a strong wind, What is the final velocity vector of the ball when it lands
Suppose that when a certain sound intensity level (in dB) triples, the sound intensity (in W/m2) quadruples. Determine this sound intensity level
a toy car of mass 2.0 kg moving to the right with a speed of 8.0 ms collides perfectly in elastically with another toy
A 20-m long steel wire (cross-section 1.0 cm2, Young's modulus 2.0 ´ 1011 N/m2), is subjected to a load of 25 000 N. How much will the wire stretch under the load
A space probe with a rest mass of 8.1×107kg and a speed of 0.50c smashes into an asteroid at rest and becomes embedded within it. what is the rest mass of the asteroid
Two pendulum bobs have masses MA = 3 kg and MB = 2 kg and equal lengths L, What is the maximum swing angle
The charge flowing through a light bulb attached to a 12.0-V battery in 14.0 s is 30.0 C. What is the average power supplied by the battery during this process?
Speed of an aircraft at takeoff when launched from a catapult on an aircraft carrier The catapult on an aircraft carrier can take an aircraft from 0 to 207 mph in 9 seconds, at which time the aircraft launches.
An electron with kinetic energy 4.60 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 50.0 cm. Discover the following values The speed of the electron
A cue ball traveling at 0.80 m/s hits a stationary 8-ball, which moves off with a speed of 0.27 m/s at an angle of 35° relative to the cue ball's initial direction. at what angle will the cue ball be deflected
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