Answers created by Kelly L

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• A ship’s guidance system measures that the ship is 380 m from the top of a lighthouse. The top of the lighthouse is 88 m above sea level. How far is the ship from the lighthouse to the nearest tenth of a meter?
  
• How do we know there are intergalactic clouds between a distant quasar and earth?
  
• What is the heaviest galaxy in the universe?
  
• The distance from the Sun to the nearest star is about #4 x 10^16# m. The Milky Way galaxy is roughly a disk of diameter #~10^21# m and thickness #~10^19# m. How do you find the order of magnitude of the number of stars in the Milky Way?
  
• If the universe is expanding, what is on the other side?
  
• Question #22d6b
  
• How do stars evolve from their birth to their death?
  
• Question #0a817
  
• Question #07fbe
  
• Question #06212
  
• What is the color of a wave that has a frequency of 600.0 terahertz?
  
• An astronaut with a mass of #80 kg# is floating in space. If the astronaut throws a #5 kg# object at a speed of #9 m/s#, how much will his speed change by?
  
• What is a block and tackle pulley?
  
• Question #5fe5f
  
• Question #47a60
  
• Can impulse be decreased?
  
• Question #d6f72
  
• How can i calculate force of tension?
  
• Question #461c5
  
• What is the slope and intercept for #y=1/2x-3# and how would you graph it?
  
• How do you write an equation in slope intercept form of the line with slope 1/2 that contains the point (-4, -3)?
  
• What is the y intercept for a line with point (1.5, 9.5) slope 0.5?
  
• How does energy differ from force?
  
• What is the limit of #(x^2)(e^x)# as x goes to negative infinity?
  
• Question #8fa7d
  
• How do I know when the Fnet in y direction is 0, any hint i have a test tomorrow?
  
• What is the relationship between Balanced Force and Net Force?
  
• Question #f4b25
  
• What is a net force?
  
• Why would anyone care about the moment of inertia of a planet?
  
• How does Newton's first law affect a rocket?
  
• Question #6ae2f
  
• Question #b1481
  
• How do laser pointers work?
  
• Question #f8f75
  
• How are Kepler's Laws important to astronomy?
  
• Question #2dfda
  
• What are some examples of the principle of conservation of energy?
  
• Question #f9bb2
  
• Does the sum of the external torques on the rigid object have to equal zero in static equilibrium?
  
• Question #e9179
  
• Question #9d62a
  
• If I'm given 6 position vs time graphs and I need to put their average velocities and average speeds in order from greatest to least. What is the difference between the two and how do I calculate them? Please help my test is tomorrow.