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A typical 15 V AAA battery has a capacity of 1 ampere-hour (A x hr). How...
A typical hearing aid battery has a capacity of 5 ampere-hour (A x hr) and can supply up to 23.4 kJ of energy. What is the voltage of the battery? a. 78 V b. 1.3 V c. 1.3 x 103 v 31. d. 7.8×10-V e. 0.90 v For a chemical reaction to be considered for use in a fuel cell, it is absolutely essential for the a. 32. free-energy change to be negative. reactants to be solids. reactants to be...
If a 1.5 V AAA alkaline battery can power a 1.4 Watt device for 1 hour, how many grams of zinc (65.38g/mol) does it contain? Overall reaction in battery: MnO2 + 2H2O + Zn --> Mn(OH)2+ ZnO The answer is 1.1 g Please explain step by step and how to reach this answer.
A battery can provide a current of 5.00 A at 3.80 V for 3.00 hr. How much energy (in kJ) is produced?
The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A · h). A 50-A · h battery can supply a current of 50 A for 1.0 h, or 25 A for 2.0 h, and so on. Consider a 12.0-V battery that has an internal resistance of 0.26 Ω and a capacity of 55.8 A · h. The battery is charged by passing a 9-A current through it for 6.2 h. (a)...
The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A⋅h). A 50 A⋅h battery can supply a current of 50 A for 1.0 h, or 25 A for 2.0 h, and so on. 1) What total energy can be supplied by a 12 V , 50 A⋅h battery if its internal resistance is negligible? Express your answer using two significant figures. 2) What volume (in liters) of gasoline has a total...
V Question 5 3.03 pts Suppose a radioactive isotope has a half-life t% = 99.1 hr. How long will it take for a sample of the isotope to decay to 3.0% of its original activity? a. 218 hr b. 0.0354hr c. 348 yr d. 297 hr e. 501 hr O a Ob Ос Question 6 3.03 pts A radioactive isotope has a half-life, t% = 27.3 yr How long will it take for a 3.27 mCi sample of this isotope...
IQ tests are designed to measure: O A. capacity for divergent thinking. OB. how much has been learned. OC. potential for learning. OD. verbal abilities. Reset Selection
1) A particular 12 V car battery can send a total charge of 84 A h (ampere-hours) through a circuit, from one terminal to the other. (a) How many coulombs of charge does this represent? (Hint: current = ) (b) If this entire charge undergoes a change in electric potential of 12 V, how much energy is involved?
6) (15 Points) A typical AA size 1.5 V Energizer alkaline battery has an internal resistance of 0.2 ohms. We connect this battery to different loads (i.e. light bulb) with different resistances. What will be voltage across the load if it has a resistance of 1 kohms, 100 ohms, and 1 ohms? For which one of these cases the internal battery resistance is most significant? Compare the current-voltage (I-V) curve of this battery to that of an ideal 1.5 V...
14 Question (1 point) A battery can provide a current of 3.60 A at 1.80 V for 7.00 hr. How much energy (in kJ) is produced? 1st attempt See Hint See Periodic Table kJ Energy =