51 results for “Power”
A number multiplied by itself.
A number multiplied by itself three times.
Expands any power of a binomial into a sum of terms.
The logarithm of a power equals the exponent times the logarithm.
Multiplying powers with the same base adds the exponents.
Raising a power to a power multiplies the exponents.
Dividing powers with the same base subtracts exponents.
Any nonzero number to the power zero equals one.
Expansion of a binomial raised to the third power.
The log of a power brings the exponent to the front.
A fractional exponent is a root and a power combined.
Any nonzero number to the power zero is one.
Divide powers with the same base by subtracting exponents.
Powers of complex numbers in trig form.
Derivative of a power function.
Antiderivative of a power function.
Antiderivative of a power function (n≠-1).
Rate of doing work.
Power dissipated in an electrical component.
Total energy radiated by a black body scales with the fourth power of temperature.
Optical power in dioptres (f in metres).
Power dissipated by a component.
Power lost as heat in a resistor.
Power from voltage and resistance.
Real power with a phase angle between V and I.
Power ratio expressed in decibels.
Combination of real and reactive power.
Metabolic rate scales with body mass to the ¾ power.
Power in an electrical circuit.
Ratio of useful output to input power.
Real power in a balanced three-phase system.
Mechanical power from torque and angular speed.
Ratio of real power to apparent power.
Vertical speed from excess engine power.
Power needed to sustain level flight equals drag times true airspeed.
Climb rate equals excess power (available minus required) divided by weight.
Thrust horsepower is the engine's brake horsepower multiplied by propeller efficiency — the power actually converted to thrust.
The exchange rate that would equalize the price of an identical basket of goods across countries.
The nominal rate adjusted for price levels, measuring relative purchasing power.
Power extracted from wind by a turbine.
Convert horsepower to watts.
Numbers one less than a power of two.
How efficiently a data centre uses energy, versus overhead like cooling.
Signal power lost simply by spreading through free space, growing with both distance and frequency.
Apparent power a transmitter would need if it radiated equally in all directions; combines transmit power, antenna gain and cable loss.
Received echo power for a monostatic radar, combining transmit power, antenna gain, target size and range.
Subtract each digit from 9 except the last, which you subtract from 10. Works for any power of 10.
When numbers are near a convenient working base that is a multiple of a power of 10, use a proportional base to simplify the multiplication.