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In open heart surgery a much smaller amount of energy will defibrillate the heart. (a) What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 45.0 J of energy? kV (b) Find the amount of stored charge. mC

A doubly charged ion is accelerated to an energy of 34.0 keV by the electric field between two parallel conducting plates separated by 2.00 cm. What is the electric field strength between the plates?

A bare helium nucleus has two positive charges and a mass of 6.64 10-27 kg. (a) Calculate its kinetic energy in joules at 2.00% of the speed of light. J (b) What is this in electron volts? eV (c) What voltage would be needed to obtain this energy? V

Bond valuation Callaghan Motors’ bonds have 10 years remaining to maturity. Interest is paid annually; they have a $1,000 par value; the coupon interest rate is 8 percent; and the yield to maturity is 9 percent. What is the bond’s current market price

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-3(2)^3+ 27/9 -3(8) + 3 -24 +3 = -21

x + 3x-1 + 4x +2 = 81 8x+ 1 = 81 8x+1-1 = 81-1 8x = 80 8x/8 = 80/8 x = 10

Yes .

0 = 8000t -16t^2 -16t( t-500) = 0 t = 0, t= 500 0r Max = 500/2 = 250 Max t = -b/2a t = -8000/2(-16) t = 250

a = 3c 7a+ 3c = 6000 21c + 3c = 6000 24c = 6000 24c/24 =6000/24 c =250 a = 3c a = 3(250) = 750 a+c = 1000

x^2- 3x + 3x -9 = x^2 - 9

A = s^2 To find side of length 81/100 = s^2 sqrt(81/100) = sqrt(s^2) 9/10 = s

Correct

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