Determine the two possible resistances of the light bulb
A light bulb is wired in series with a 139 resistor, and they are connected across a 120 V source. The power delivered to the light bulb is 23.7 W. What are the two possible resistances of the light bulb?
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The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 240 V outlet and draws a current of 1.04 A. If the radius of the tungsten wire is 0.003 mm, how long must the wire be?
Suppose the U.S. Treasury offers to sell you a bond for $747.25. No payments will be made until the bond matures 5 years from now, at which time it will be redeemed for $1,000. What interest rate would you earn if you bought this bond at the offer
Determine the ratio of the mass flow rates of the hot to cold water. Assume the heat losses from the mixing chamber to be negligible and the mixing to take place at a pressure of 20 psia.
Consider a container of volume 5.0dm3 that is divided into two compartments of equal size. In the left compartment there is nitrogen at 1.0 atm and 25oC; in the right compartment there is hydrogen at the same temperature and pressure.
You plan to invest in securities that pay 8.0%, compounded annually. If you invest $5,000 today, how many years will it take for your investment to grow to $9,140.20?
A motor gives gear A an angular acceleration of 4(t^3) rad/s^2, where t is in seconds. If gear A is initially turning at 20 rad/s, determine the angular velocity of gear B when t = 2s.
You want to buy a new sports car 3 years from now, and you plan to save $4,200 per year, beginning one year from today. You will deposit your savings in an account that pays 5.2% interest. How much will you have just after you make the 3rd deposit
A capacitor is connected to a 12 kHz oscillator. The peak current is 70 mA that produces an rms voltage of 5.0 V. a). What is the value of the capacitance C?
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