Describe the outflow channels and valley networks on Mars
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Outflow channels on the Martian surface appear to have been cut by massive floods carrying as much as 10,000 times the volume of water flowing down the Mississippi River. Such floods apparently swept away landscape features and eroded deep channels. The number of craters formed on top of the outflow channels shows that they are billions of years old.Valley networks look like meandering river beds that probably formed over long periods. The valley networks are located in the heavily cratered southern hemisphere, so they must be very old as well.
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What are "forbidden lines"? Briefly describe how they form
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A student wishes to build a telescope. She has available an eyepiece of focal length -5.0 cm. What focal length objective is needed to obtain a magnification of 10x?
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If you add 900 kJ of heat to 900 g of water at 90.0°C, how much water is left in the container? The latent heat of vaporization of water is 22.6 × 105 J/kg
A) 518 g B) 258 g C) 340 g D) 600 g E) none
Electric Field of Point-Charges: A small glass bead has been charged to 1.9 nC. What is the strength of the electric field 2.0 cm from the center of the bead? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A. 4.3 × 104 N/C B. 8.5 × 102 N/C C. 8.1 × 10-5 N/C D. 8.5 × 10-7 N/C