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The ammeter has a reading of 2.00 A. Using Kirchhoff's Laws, find currents I1 and I2 and the value of the unknown source.
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- 1.528 KW-hr- K Cal-secs (Ans. 1313.781)Can you answer question H?27 J of heat energy is transferred into an ideal gas and 46 J of work is done on the gas. What is the change in thermal energy, in Joules? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
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- I need the answer as soon as possibleHelium is used inside a 7.15m diameter spherical balloon. The said substance is at 103.234 kPa and 309K and is surrounded by air at 100.086 kPa and 298 K. Solve for the lifting force in kN. Express your answer in 3 decimal places.1.An electric kettle transfers 900 000 J of energy to some water in 10 minutes. (a) Estimate the power of the electric kettle. (b) How long does it take to supply 1 500 000 J of energy to heat some water? 2.Energy is measured in (a)__________________, written as J. 2. The energy transferred per unit time is called (b)__________________. Its SI unit is (c)__________________, written as W. 3. (d)_______________________ (kW h) is also a unit of energy which is more common in practical use. 1 kW h is equal to (e)_______________ J. 4 The electrical energy supplied to an electrical appliance can be measured using a (f)_______________________ (readings in J) or a (g)_______________________ (readings in kW h). 6.Heater A transfers 500 kJ of heat in 30 s while heater B transfers 0.8 MJ of heat in 0.75 min. Which heater transfers heat more quickly? Explain your answer with calculations.
