A pair of alkaline D batteries can provide about 80000 J of electric energy at 3.0...
A pair of alkaline D batteries can provide about 80000 J of electric energy at 3.0 V. If a current of 0.5 A flows through two D batteries while they’re in the circuit of a flashlight, how long will the batteries be able to provide power to the flashlight?
(answer must be in hours)
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A pair of alkaline D batteries can provide about 80000 J of
electric energy at 3.0...
Batteries are rated by their voltage, but also by the energy that they can provide. A...
Batteries are rated by their voltage, but also by the energy that they can provide. A typical D-cell battery has a voltage of 1.5 V, and is also rated at 15,000 mA•h—a product of current and time. a. How much charge can flow from the battery before is discharged? b. For how long could this battery power a 1.5 W flashlight bulb?
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3...
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
20.64 Electric Power and Energy Assuming 91.0% efficiency for the conversion of electrical power by the...
20.64 Electric Power and Energy Assuming 91.0% efficiency for the conversion of electrical power by the motor, what current must the 84.0-V batteries of a 690-kg electric car be able to supply: To accelerate from rest to 22.0 m/s in 1.00 min? Figure caption: This REVAi, an electric car, gets recharged on a street in London. (credit: Frank Hebbert) Submit Answer Tries 0/10 To climb a 190-m-high hill in 2.00 min at a constant 22.0-m/s speed while exerting 410 N...
4. (to be graded) You've been hired by Elon Musk for a secret project within Tesla. Rather than annoying battery technology with its slow charging and limited lifetime, he wants to try to power c...
4. (to be graded) You've been hired by Elon Musk for a secret project within Tesla. Rather than annoying battery technology with its slow charging and limited lifetime, he wants to try to power cars by storing the energy in capacitors a) If a small car with an efficient electric motor consumes about 10kW of power on average, and we'd like to be able to drive for several hours before recharging, about how much energy, in J, do we need...
1. What is the emf of a battery that increases the electric potential energy of 0.050...
1. What is the emf of a battery that increases the electric potential energy of 0.050 C of charge by 0.60 J as it moves from the negative to the positive terminal? 2 .A thermistor is a device whose resistance varies with temperature. At 20∘C a thermistor's resistance is 10.0 kΩ. When connected to a 1.2 V battery, the current through the thermistor increases by 20 μA as the temperature increases to 30∘C. What is the thermistor's resistance at this...
I tried the first part and it was incorrect! I need help QUICK! thanks!
Two Nichrome wiresThe following questions refer to the circuit shown in the figure, consisting of two flashlight batteries and two Nichrome wires of different lengths and differentthicknesses as shown (corresponding roughly to your own thick and thin Nichrome wires). The thin wire is 49 cm long, and its diameter is 0.25 mm. The thick wire is 15cm long, and its diameter is 0.40 mm.(a) The emf of each flashlight battery is 1.5 volts. Determine the steady-state electric field inside each...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery to a Nichrome (NIC) wire. Each thick connecting wire is 14 cm long, and has a radius of 9 mm. The thick wires are made of copper, which has 8.35+28 mobile electrons per cubic meter, and an electron mobility of 0.00434 (m (V/m). The Nichrome wire is 8 cm long, and has a radius of 4 mm. Nichrome has 9e+28 mobile electrons per cubic...
Two Nichrome wires The following questions refer to the circuit shown in the figure, consisting of...
Two Nichrome wires
The following questions refer to the circuit shown in the figure,
consisting of two flashlight batteries and two Nichrome wires of
different lengths and different thicknesses as shown (corresponding
roughly to your own thick and thin Nichrome wires). The thin wire
is 54 cm long, and its diameter is 0.25 mm. The thick wire is 15 cm
long, and its diameter is 0.39 mm.
(a) The emf of each flashlight battery is 1.5 volts. Determine
the steady-state...
Glycerol can be used to 1 provide energy to cells 2. synthesize glucose synthesize fats d....
Glycerol can be used to 1 provide energy to cells 2. synthesize glucose synthesize fats d. more than one choice is correct Which of the folowing is NOT true about an amino acid that is made from an intermediate of the citric acid cycle? a tis added to the amino acid pool b. it is an essential who acid c. it can leave the cell where it was made d it can be used for protein synthesis To produce 4...
You build an electric circuit with a resistance of 10Ω and battery that can supply a...
You build an electric circuit with a resistance of 10Ω and battery that can supply a potential difference of 12 V across the resistor. If you now connect an ammeter between the cell and the resistor, what will be the reading on the ammeter? Group of answer choices 4.8 A 1.2 A 0.83 A 2.2 A Question Which of the following is likely to happen when a conductor is connected between the poles of a cell? Group of answer choices...
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
20.64 Electric Power and Energy Assuming 91.0% efficiency for the conversion of electrical power by the motor, what current must the 84.0-V batteries of a 690-kg electric car be able to supply: To accelerate from rest to 22.0 m/s in 1.00 min? Figure caption: This REVAi, an electric car, gets recharged on a street in London. (credit: Frank Hebbert) Submit Answer Tries 0/10 To climb a 190-m-high hill in 2.00 min at a constant 22.0-m/s speed while exerting 410 N...
4. (to be graded) You've been hired by Elon Musk for a secret project within Tesla. Rather than annoying battery technology with its slow charging and limited lifetime, he wants to try to power cars by storing the energy in capacitors a) If a small car with an efficient electric motor consumes about 10kW of power on average, and we'd like to be able to drive for several hours before recharging, about how much energy, in J, do we need...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery to a Nichrome (NIC) wire. Each thick connecting wire is 14 cm long, and has a radius of 9 mm. The thick wires are made of copper, which has 8.35+28 mobile electrons per cubic meter, and an electron mobility of 0.00434 (m (V/m). The Nichrome wire is 8 cm long, and has a radius of 4 mm. Nichrome has 9e+28 mobile electrons per cubic...
Two Nichrome wires
The following questions refer to the circuit shown in the figure,
consisting of two flashlight batteries and two Nichrome wires of
different lengths and different thicknesses as shown (corresponding
roughly to your own thick and thin Nichrome wires). The thin wire
is 54 cm long, and its diameter is 0.25 mm. The thick wire is 15 cm
long, and its diameter is 0.39 mm.
(a) The emf of each flashlight battery is 1.5 volts. Determine
the steady-state...
Glycerol can be used to 1 provide energy to cells 2. synthesize glucose synthesize fats d. more than one choice is correct Which of the folowing is NOT true about an amino acid that is made from an intermediate of the citric acid cycle? a tis added to the amino acid pool b. it is an essential who acid c. it can leave the cell where it was made d it can be used for protein synthesis To produce 4...
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