Answers edited by PJ

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• One end of uniform stretcher is to be lifted from floor so that the other end may be considered to be the pivot point. The stretcher is 2m long and its mass is 20kg .how much force to lift your end, what is the mechanical advantage?
  
• What will happen when photons moving in opposite directions collide?
  
• Cars P and Q start the journey from the stationary at the same time and each accelerates with the acceleration `a` and `3ms ^ - 2`. After 2 seconds, P leads Q by 6 m. Find `a`?
  
• How do you combine like terms in `(6n ^ { 3} - 7+ 6n ^ { 2} ) + ( 4- 7n ^ { 2} - 6n ^ { 4}) + (8n^4 - 8n )`?
  
• How are temperature on Celsius and Kelvin scales related?
  
• Is it possible for immiscible liquids to react with each other?
  
• One watch is 1 minute slow at 1 pm on Tuesday and 2 minutes fast at 1 am on Friday. When did it show that correct time?
  
• How do you graph `f(x) = 6^x` by plotting points?
  
• What is 25 mi/hr converted to m/min?
  
• A movie rental store charges a membership fee of $10.00 plus $1.50 per movie rented. What is a possible domain that shows the cost to a member of renting movies?
  
• How do you solve `2x+22=0` by graphing?
  
• What is .01 as a percent?
  
• What is the diference between law of gravitation and universal law of gravitation?
  
• Frequency modulation is best achieved at what stage in a transmitter?
  
• The Scales model of a skyscraper being built is 4.2 ft tall When Is The skyscraper will be 525 meters tall what scales was used to make the model?
  
• Why is the Thevenin's theorem important for circuit diagrams?
  
• The sum of a number and two times a smaller number is 62. Three times the bigger number exceeds the smaller number by 116. The bigger and smaller number is what?
  
• A boat is sailing due east parallel to the shoreline at a speed of 11 miles per hour. At a given time, the bearing to the lighthouse is S 70° E, and 30 minutes later the bearing is S 63° E (see figure). The lighthouse is located at the shoreline. help?
  
• You are rotating a bucket of water in a vertical circle. Assuming that the radius of the rotation of the water is 0.95 m, what is the minimum velocity of the bucket at the top of its swing if the water is not to spill?