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Q: What is p to the second power equal to 81?

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A Watt is power. A Joule is Energy. A Joule is a Watt X Seconds. Watts are units of Power, whereas Joules are units of Energy. Power is Energy in accordance to time: P = E/t . So One Watt of Power is equal to one Joule per second. P=E/t 1 Watt = 1 Joule/ 1 second

A Watt is power. A Joule is Energy. A Joule is a Watt X Seconds. Watts are units of Power, whereas Joules are units of Energy. Power is Energy in accordance to time: P = E/t . So One Watt of Power is equal to one Joule per second. P=E/t 1 Watt = 1 Joule/ 1 second

if p² = 169, then p = ±√169 In other words, take the square root of 169 and p is either the positive or negative value of the square root.

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The SI units for mechanical and electrical Power are the Watt (W), and the Watt (electrical) (We) respectively. Power is the rate of doing work, or that energy is converted. It can be thought of as - "amount of energy used to perform work, or converted from one form to another, in a specified period of time, namely, in a second".The equation is P=W/t, where P is Power, W is the work done and t is the time taken.The equation, P=E/t, where E is the amount energy used to do the work, means the same thing.The unit for Energy is the Joule (J), and the unit for time is the second (s).Therefore, you should see that the Watt is equal to 1 Joule (J) per second (s).There is also electrical power which should be considered, and there are a few different formulae depending on whether voltage, current or resistance are being considered.Electrical power is equal to the amount of current times the voltage, or P=IVAlso, electrical power is equal to the current squared times the resistance, P=I2RThere are other formulae for the average electrical power of a sinusoidal voltage, but this is outwith the scope of this answer.

The SI units for mechanical and electrical Power are the Watt (W), and the Watt (electrical) (We) respectively.Power is the rate of doing work, or at which energy is converted. It can be thought of as - "amount of energy used to perform work, or converted from one form to another, in a specified period of time, namely, in a second".The equation is P=W/t, where P is Power, W is the work done and t is the time taken. The equation, P=E/t, where E is the amount energy used to do the work, means the same thing. The unit for Energy is the Joule (J), and the unit for time is the second (s). The unit of power is then the watt,which is equal to 1 Joule (J) per second (s).Electrical PowerThere are a few different formulae depending on whether voltage, current or resistance are being considered. Electrical power is equal to the amount of current times the voltage, or P=IV. Electrical power is also equal to the current squared times the resistance, P=I2RThere are other formulae for the average electrical power of a sinusoidal voltage, but this is beyond the scope of this question.

The formula is P = E x I. Power in watts (P) is equal to the product of the voltage (E) and the current (I). The total power used at 6 amps and 120 volts is equal to 720 watts. If the voltage was 240 volts, the total power would be 240 volts times 6 amps, or 1440 watts.

if the question were 81 S in a S P the answer would be 81 Squares in a Sudoku Puzzle so the extra S letter is a mystery unless 81 Squares in a Standard Sudoku Puzzle as there are other variations

P = (E2)/R = 81/9 = 9 watts

dKE/dt = P= F.v Where KE is Kinetic Energy and P is Power.

5p2 = 315 Therefore, p2 = 315/5 p = sqrt(63) p = Â±7.94

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