What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 80.0 g of glass, 200 g ofbaby formula, and 2.70 x 102 g of aluminum from 20.0°C to 90.0°C in 4.70 min? (Assume the specific heats of glass, babyformula, and aluminum are 840 J/(kg · °C), 4,186 J/(kg · °C), and 900 J/(kg · °C), respectively.)A

Answered: Image /qna-images/answer/62fa3e65-1b14-4900-b47f-7ac93097edda.jpg

What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 80.0 g of glass, 200 g of baby formula, and 2.70 x 10 g of aluminum from 20.0°C to 90.0°C in 4.70 min? (Assume the specific heats of glass, baby formula, and aluminum are 840 J/(kg - °C), 4,186 J/(kg - °C), and 900 1/(kg - °C), respectively.) A

What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 80.0 g of glass, 200 g of baby formula, and 2.70 x 10 g of aluminum from 20.0°C to 90.0°C in 4.70 min? (Assume the specific heats of glass, baby formula, and aluminum are 840 J/(kg - °C), 4,186 J/(kg - °C), and 900 1/(kg - °C), respectively.) A

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 57PQ

See similar textbooks

Similar questions

Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
Taking R = 1.00 k and = 250 V in Figure P21.49, determine the direction and magnitude of the current in the horizontal wire between a and e. Figure P21.49
When operating on a 120-V circuit, an electric heater receives 1.30 103 W of power, a toaster receives 1.00 103 W, and an electric oven receives 1.54 103 W. If all three appliances are connected in parallel on a 120-V circuit and turned on, what is the total current drawn from an external source? (a) 24.0 A (b) 32.0 A (c) 40.0 A (d) 48.0 A (e) none of those answers
What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 70.0 g of glass, 200 g of baby formula, and 3.50 ✕ 102 g of aluminum from 20.0°C to 90.0°C in 4.70 min? (Assume the specific heats of glass, baby formula, and aluminum are 840 J/(kg · °C), 4,186 J/(kg · °C), and 900 J/(kg · °C), respectively.)
The heating element of an electric coffee maker operates at 120 V and carries a current of 2.00 A. Assumingthe water absorbs all the energy delivered to the resistor, calculate the time interval during which thetemperature of 0.500 kg of water rises from room temperature (23.0°C) to the boiling point.
A 0.686-meter-long wire has a cross-sectional area of 8.23 x 1 0-6 m2 and a resistance of 0.1 25 ohm at 20° Celsius. This wire could be made of A. aluminum (p = 2.82x10 a Q m) B. nichrome (p = 1.50x1 O'6 Q m) C. copper (p — 1.72x 1 0’8Q• m) D. tungsten (p = 5.60x 1 08Q- m)
Suppose a flashlight has 6.8 × 102 C of charge pass through it during time 0.35 h. A. What is the rate of the flashlight’s energy consumption, in watts, if it operates at a voltage of 3.00 V?
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply: (a) To accelerate from rest to 25.0 m/s in 1.00 min? (b) To climb a 2.00×102 -m - high hill in 2.00 min at a constant 25.0-m/s speed while exerting 5.00×102 N of force to overcome air resistance and friction? (c) To travel at a constant 25.0-m/s speed, exerting a 5.00×102 N force to overcome air resistance and friction?
The heating element of a coffeemaker operates at 120 V and carries a current of 2.50 A. Assuming the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat 0.515 kg of water from room temperature (23.0°C) to the boiling point. _______min
The copper windings of a motor have a resistance of 46 Ω at 20oC when the motor is idle. After the motor has run for several hours, the resistance rises to 59 Ω. What is the temperature in Celsius of the windings now? Ignore changes in the dimensions of the windings. The temperature coefficient of resistivity for copper is 4.3 × 10-3 K-1.
If a battery contains 2500 milliAmp-hours (mAh) of charge, how much total energy can it deliver while operating an electrical device at 3.15 volts?