Answers created by Deep

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• What cosmological problem is “dark energy” believed to solve?
  
• How do I determine the pressure in the column BC due to the gas supply? (there is a picture with question when you open)
  
• Question #387d0
  
• Question #afeec
  
• What is the name of #h# in the Planck-Einstein relation, and how do you solve for it?
  
• Question #03eda
  
• How do you calculate the de Broglie wavelength of an electron traveling at #2.0 times 10^8# #m##/s#?
  
• Question #4df84
  
• Question #dc463
  
• Specific heat is a physical property. ls it intensive or extensive?
  
• What is the vertex form of #y= x^2 + 10x +25 #?
  
• Question #a1440
  
• How do you find the value of a given the points (8,-2), (5,a) with a distance of 3?
  
• What does bounded above or below mean in precaculus?
  
• Question #58932
  
• What is the equation of the line that goes through #(5,9)# and #( 0,- 8)#?
  
• Harry is standing 2 m in front of a flat mirror. How far behind the mirror is his image and what is the magnification of the image?
  
• Question #d6e9e
  
• A coffee maker which draws 13.5 A of current has been left on for 10 minutes. What is the net number of electrons that have passed through it?
  
• Question #6e960
  
• How do you simplify #(-2a^-2 b^4)(3a^2 b^-5) #?
  
• How do you differentiate #f(x)=e^(sin(2/x)# using the chain rule.?
  
• The water level in a plastic pool changed by -8 gallons each hour due to a small hole in the bottom. After 6 hours, the pool contained 132 gallons. How much water was in the pool originally?
  
• #"Ionic bonding always occurs between....?"#
  
• What is the moment of inertia of a pendulum with a mass of #2 kg# that is #12 m# from the pivot?
  
• If A= A1i + A2j + A3k and B= B1i + B2j + B3k. Prove that A.B= A1B1+A2B2+A3B3?
  
• The gas inside of a container exerts #48 Pa# of pressure and is at a temperature of #320 ^o K#. If the pressure in the container changes to #64 Pa# with no change in the container's volume, what is the new temperature of the gas?
  
• There are 10 bicyclists entered in a race. In how many different orders could these 10 bicyclist finish?
  
• How much 25% antifreeze and 50% antifreeze should be combined to give 40 gallons of 30% antifreeze?
  
• Question #c3fe6
  
• An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #640 KJ# to # 160 KJ# over #t in [0, 12 s]#. What is the average speed of the object?
  
• How do you find the slope of -3x=6y-2?
  
• How do you find the domain and range of #y=tan x#?
  
• How are electric and magnetic fields related?
  
• How many electrons in ONE MOLE of carbon dioxide?
  
• Question #271ba
  
• How much calcium hydroxide (#Ca(OH)_2#), in grams, is needed much produce 1.5 L of a 0.25M solution?
  
• If an ideal gas has a pressure of 7.05 atm, a temperature of 379 K, and has a volume of 54.75 L, how many moles of gas are in the sample?
  
• Question #ecdbc
  
• How do you find the domain and range of #(x-3) (3x-2)#?
  
• How do you solve #abs(5x+2)-4=18#?
  
• A magnesium atom reacts to produce a magnesium ion. Which diagram shows a magnesium ion?
  
• How are electric and magnetic fields related?
  
• How does the sun's atmosphere differ from its interior?