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1. When active and adaptive optics are in use, UNC's 4.1-meter diameter SOAR telescope will be able to resolve 2-micron light about as well as the 2.5-meter diameter Hubble Space Telescope, to about: A. 0.12 arcseconds B. 0.20 arcseconds C. 1 arcsecond D. 20 arcminutes E. 32 arcminutes EXAMPLE: The 2.5-meter diameter Hubble Space Telescope resolves sources of 1-micron wavelength light to about: B. 0.1 arcseconds B. q = 0.25" × (l / 1 mm) / (D / 1 m) = 0.25" × (1 mm / 1mm) / (2.5 m / 1 m) = 0.1" 2. Consider a planet that, given its albedo and distance from the sun, should have a surface temperature of 110 K, but instead has a surface temperature of 130 K because it has an internal source of heat. How much more energy is the planet emitting than receiving? A. 1.2 B. 1.4 C. 1.7 D. 2.0
A moving 3.30kg block collides with a horizontal spring whose spring constant is 261 N/m.What is the speed of the block when it hits the spring
A uniform electric field has magnitude E = 270 N/C and is directed to the right. A particle with charge +4.3 nC moves along the straight line from a to b that is 0.25m in length, What is the work done on the particle by the electric field
A 40.3-cm diameter disk rotates with a constant angular acceleration of 2.50 rad/s2. Find the linear velocity and tangential acceleration of P at t = 2.30 s
Did you firm earn profit or incurred loss at the end and make a small comment on your financial position at the end.
A skater of mass 81.5 kg initially moves in a straight line at a speed of 4.70 m/s. what is the skater's final velocity
What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Clarify what the boundary conditions w..
A ball is thrown horizontally from the roof of a building 47.0m tall and lands 21.3m from the base. What was the ball's initial speed
A bicycle rim has a diameter of 0.65 m and a moment of inertia, measured about its center, of 0.15kg?m2 What is the mass of the rim
What is the radius of a hydrogen-filled balloon that would carry a load of 3700 N (in addition to the weight of the hydrogen) when the density of air is 1.29 kg/m3
Flying due east, the plane flies with the rotation of the Earth, while flying due west, it flies against the rotation. Will the flight times be the same? Different? Why?
Assume that a 6 volt energy source is in a circuit that has a resistance of 10ohms. Determine the current and power
If i have a hollow copper sphere that has an outer diameter of 20.00 cm that is floating so that everything is just submerged in a bucket of water
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