The potential difference across a resting neuron in the human body is about 88.0 mV and carries a current of about 0.345 mA. How much power does the neuron release? 30,30 x Your response is off by a multiple of ten, W
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- In the circuit shown, the potential difference R, VA = V8 = 16.0 V and the resistance R = R2 = R3 = R4 = 255 2. The arrows for currents IA and Ig indicate the direction of positive current flow. The arrows do not necessarily indicate the direction of the actual current flow at those points. R. R. Determine the current IA. R, 7.94785 IA A Incorrect Determine the current Ig. 7.92695 Ig = A IncorrectWhat is the power rating of a stove that receives 12.5 A of current and requires 150 V to function? a. 12 W b. 1.9 x 10³J c. 12 J d. 1.9 x 10³ W e. 150 WIf 5.0 × 1021 electrons pass through a 50.2 Q resistor in 10 min, what is the potential difference across the resistor? use the charge of the electron to be -1.6 × 10-19 C. Select one: O A. 10.04 O B. 4016.00 OC. 401.60 O D. 16.73 O E. 66.93
- The resistors in the circuit below have the following values: R₁ = 6.80 N, R₂ = 7.00 £, and R3 = 3.10 . The two batteries each have a voltage of 3.00 v. ww R3 ww E₂ (a) Find the current in through R3. .&₁ R₁ (b) How much power do the batteries deliver to R₂? WK05gure www.i A www Open: 1.636 A Closed: 1.565 A 5.0 Ω 10.02 1 of 1 Part A Express your answer in volts. ε = What is the emf of the battery in the figure (Figure 1)? Submit Part B r = 195| ΑΣΦ Submit Request Answer What is the internal resistance of the battery in the figure? Express your answer in ohms. IVE ΑΣΦ Provide Feedback www. P Request Answer ? www. ? V Ω
- When running on its 11.4 V battery, a laptop computer uses 8.3 W. The computer can run on battery power for 8.5 h before the battery is depleted. Part A. What is the current delivered by the battery to the computer?Express your answer with the appropriate units. Part B. How much energy, in joules, is this battery capable of supplying?Express your answer in joules. Part C. How high off the ground could a 75 kg person be raised using the energy from this battery?Express your answer with the appropriate units.12. A lightbulb uses 4 A when it is connected across a 120 V source. What is the resistance in the resistane = V Vano -301 210-3012 lightbulb? 13. What is work? the transfer of energy by a force object agit is Displaced acting on by vitve opergy which a body possesses 14. What is kinetic energy? tion 15. What is potential energy? energy that is waiting to be a 16. A boy pushes on a parked car with a force of 111 N. The car does not move. How much work does the boy do on the car? Explain your answer. Work : Owork becasue the car. didn't move 17. In the absence of air resistance, how would the acceleration of a 2.0 kg book and the acceleration of a 3.3 kg rock differ if the objects were dropped from the same height? 18. What are Newton's three laws of motion (summarize them)? ject will not Law I an Change unle torce is acted on gecond low, the force On un object is equal! mass & its accelertion 3 law, when 2 bu interact they apply Forces to each oth 19. If your weight is 777 N, how much…Your car's 31.8-W headlight and 2.50-kW starter are ordinarily connected in parallel in a 12.0-V system. What power would one headlight and the starter consume if connected in series to a 12.0-V battery? (Neglect any other resistor in the circuit and any change in resistance in the two devices. Give your answer to at least one decimal place.) W
- A battery with an emf of 40 V and internal resistance of 0.3 Q is connected across a load resistor R. If the current in the circuit is 8.6 A, what is the value of R (in Q)? R Select one: O A. 3.89 O B. 5.28 Oc. 3.42 OD. 4.65 O E. 4.35The potential difference across a resting neuron in the human body is about 76.0 mV and carries a current of about 0.270 mA. How much power does the neuron release? Need Help? Read It$6