Answers created by Cameron G.

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• Is point (1,4) on the line represented by the equation #x + 2y=5#?
  
• How do you simplify #-10+ 4k - 10+ 4k#?
  
• Question #90750
  
• Question #a5ac3
  
• How do you solve #y= ( 1- 4) ^ { 2} + 1#?
  
• How many grams of silver are needed to absorb 1.00 kJ of energy changing the temperature from 33.0°C to 41.8°C?
  
• How do you write #1/2x + y = 3# in standard form?
  
• How do you solve #-2abs(y-7)+18=8#?
  
• A hose lying on the ground shoots a stream of water upward at an angle of 40° to the horizontal. The speed of the water is 20 m/s as it leaves the hose. How high up will it strike a wall which is 8 m away?
  
• What is the vertex of # y = x^2+10x+21 #?
  
• Question #0a1c0
  
• "Absolute Zero" is what temperature on the Celsius and Fahrenheit scales respectively?
  
• How do you factor completely #2b^2-2b-12#?
  
• How do you solve # |x - 1/2| = 9#?
  
• What is the slope of the line passing through the following points: # (5, 1) , (4, 6)#?
  
• A projectile is shot from the ground at a velocity of #3 m/s# and at an angle of #(7pi)/12#. How long will it take for the projectile to land?
  
• What is the distance between the points (21,-30) and (3, 8)?
  
• In Mrs. Smith's pie recipe the amount of blueberries used is directly proportional to the number of pie. If 4 pies requires 6.8 pounds of blueberries, how many blueberries are needed to bake 13 pies?
  
• How do you simplify #sqrt5/sqrt10#?
  
• How much heat is liberated by the combustion of 206 g of hydrogen? #DeltaH_(comb)# = -286 kJ/mol
  
• It takes light to roughly #3.0 times 10^9# seconds to travel one meter. How do you write this time in standard form?
  
• What is the number 6,034,000 written correctly in scientific notation?
  
• The populations of Pottsville, Middleton, and Swain are 38,247, 42,635, and 1,324. What is the total population of these cities?
  
• What digit is in the tenth's column of 53.8?
  
• What digit is in the tenth's column of 7.358?
  
• What digit is in the thousandths column of 0.472?
  
• Why are there lots of alveoli in the lungs?
  
• Question #bca43
  
• What is the momentum of a 100 kilogram boulder rolling south down a hill at a velocity of 5 meters per second?
  
• What pressure will 14.0 g of CO exert in a 3.5 L container at 75°C?
  
• A circuit with a resistance of #3 Omega# has a fuse melts at #4 A#. Can a voltage of #16 V# be applied to the circuit without blowing the fuse?
  
• How many grams of carbon tetrafluoride, #CF_4#, are produced from the complete reaction of 1.46 moles of carbon in the reaction #C+2F_2 -> CF_4#?
  
• An object travels North at #1 m/s# for #8 s# and then travels South at #7 m/s# for # 5 s#. What are the object's average speed and velocity?
  
• What is the name of #MgOH#?
  
• A 1.50-g sample of nitrous oxide contains #2.05 * 10^22# #N_2O# molecules. How many nitrogen atoms are in this sample? How many nitrogen atoms are in 44.0 g of nitrous oxide?
  
• How much power is produced if a voltage of #12 V# is applied to a circuit with a resistance of #144 Omega#?
  
• What is the name of the waxy layer found on the upper and lower surface of a leaf?
  
• In the reaction# Mg (s) + 2HCl (aq) -> H_2 (g) + MgCl_2 (aq)#, how many grams of hydrogen gas will be produced from 125.0 milliliters of a 6.0 M HCI in an excess of Mg?
  
• What type of technology is used to provide energy, make bombs, and treat cancer?
  
• Harold stretches a rubber band and lets it go. The rubber band flies across the room. He says this demonstrates the transformation of kinetic to elastic potential energy. Is Harold correct?
  
• What is the mass number of potassium?
  
• How would you balance the following equation: H3BO3 --> H4B6O11 + H2O?
  
• If you place a 7.5 kg television set on a bathroom scale and it reads 78.4 N what is the acceleration due to gravity at that location?
  
• When a cannon is fired, are the forces on the cannonball and on the cannon equal in magnitude? Are the accelerations of the two equal?
  
• Question #3015d
  
• Question #409c9
  
• Question #10b08
  
• What is the importance of the isotope C14?
  
• What are some examples of biological effects of radiation?
  
• If an object is accelerating, can the net force acting on it ever be zero?
  
• Question #46799
  
• What is the work for a pulley system that lifts 9.8 N 10cm?
  
• Acceleration due to gravity on Mars is about one—third that on Earth. Suppose you throw a ball upward with the same velocity on Mars as on Earth. How would the balls maximum height compare to that on Earth?
  
• A soccer player kicks a rock horizontally off a 37.1 m high cliff into a pool of water. If the player hears the sound of the splash 3.98 s later, and the speed of sound is 343 m/s, what was the initial speed given to the rock?
  
• Question #c2e0f
  
• Question #1fc06
  
• What are the steps that wind energy goes through to generate power or electricity?
  
• Why is electromagnetic radiation a transverse wave?
  
• How do transverse waves affect our lives?
  
• The half-life of plutonium-239 is 24,100 years. Of an original mass of 100g, how much plutonium-239 remains after 96,440 years?
  
• How many moles are there in 1.5 g of ethanol, #CH_3CH_2OH#?
  
• Is the empirical formula for a compound ever the same as its molecular formula? .
  
• How many #C# atoms are there in 0.502 mole of #C#?
  
• How would you balance the following equation: HI(g) → H2(g) + I2(g)?
  
• According to Bohr’s model of the atom, in which orbitals do electrons have the least energy?
  
• How would you find molar mass?
  
• Question #13e16
  
• Question #7fd1d
  
• How do you balance Co(OH)3 + HNO3-->Co(NO3)3+ H2O?
  
• Question #c25ac