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  • Question #26469 - Socratic
    Electric Meters usually measure in KWH units KWH is acronym for Kilo Watt Hour It's basically units of Work Energy You can do the math for the Kilo Watt Hour It's simple KWH = 1000* 60*60 Watt-Sec rArr KWH = 3 6*10^6 Watt-Sec We know that, Power = (Work) (Time) Units of Power are Watt, Work are Joules and Time are Seconds So, Watt-Sec is nothing but Joules So, KWH=3 6Mega Joules One KWH
  • Question #9e218 + Example - Socratic
    The loss of electrons Oxidation is defined as the loss of electrons A simple oxidation reaction might happen during electrolysis, and at the anode For example, chloride ions get oxidized into chlorine gas with the following half-equation: 2Cl^(-)-2e^(-)->Cl_2
  • Question #250ef - Socratic
    It is doubled as well Let m_1,m_2 be the masses of two objects We know that m_2=2m_1 The kinetic energy of an object is given by the equation: KE=1 2mv^2 For the first object, its KE is KE_1=1 2m_1v^2 For the second object, its KE is KE_2=1 2m_2v^2 Remember that, m_2=2m_1 : KE_2=1 2*2m_1*v^2 KE_2=mv^2 : KE_2=2KE_1 So, the KE of the second object is double of the first object
  • Question #191c4 - Socratic
    3 17 moles 2 dp We have: 2 sodium atoms at 22 99 grams per mole = 45 98 1 sulfur atom at 32 06 grams per mole = 32 06 4 oxygen atoms at 15 99 grams per mole = 63 96 45 98+32 06+63 96= 142 grams per mole Since: Number of moles x molar mass = mass in grams Mass in grams -: molar mass = number of moles 450 142= 3 17 moles 2 d p
  • Question #4d894 - Socratic
    k = (-10) 3 Rearranging 3x + 2y - 5 = 0 to fit the form y = mx + c: 2y = -3x + 5 (2y) 2 = (-3x + 5) 2 y = (-3) 2x + 5 2 So m_1 = (-3) 2 Rearranging kx - 5y + 8 = 0 to
  • Question #4697e - Socratic
    4=E (Note that my pictures are hugely off scale) This may be one of the problems that requires some thinking before trying Let's label what we know Here, I have created a picture in Paint We are trying to solve for E Hmm Let's try to label the angles We know that the angles d and b are right angles Let's name angle c as x We now have: Using the fact that the angles of a triangle always
  • How do you simplify 3^ { 4} - 24\div 4\cdot 4- \frac - Socratic
    3^4-24-:4*4-54 6=color (blue)48 Simplify: 3^4-24-:4*4-54 6 This expression can be simplified by using the order of operations, which is represented by the acronym PEMDAS , which means: Parentheses (brackets) Exponents (powers) Multiplication and Division from left to right because they are equal in rank
  • Question #c25bf - Socratic
    a ) sin(x+y) = (2-2sqrt42) 15 b ) cos(x-y) = (4sqrt4-sqrt21) 15 c ) tan(y 2) = -3-2sqrt2 d )cos(2x) = -17 25 We will need the cos(y) and the sin(x) Because y is in
  • Question #ae8b8 - Socratic
    Therefore, we need to move the #y# term to the left side of the equation and the constant #1# to the right side of the equation:
  • Question #e4223 - Socratic
    This is standardised and usually calculated that way up Sometimes the context of the question requires you to 'bend the rules' a bit but if you declare what you are doing the reader should follow your argument





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