What is the sign of the source charge? negative Now a particle whose charge is -8e-09 C is placed at location A. Which arrow (a-j) best indicates the direction of the electric force on the -8e-09 C charge? c Incorrect: Your answer is incorrect. The electric field at location A has the value < -7000, -7000, 0 > N/C. What is the unit vector in the direction of $ \vec{E} $ at this location? $ \hat{E} = $ What is the electric force on the -8e-09 C charge?

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

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0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr