The equation to find the luminosity of a star is the area of the star times its effective temperature times the Stefan-Boltzmann constant. In mathematical terms, this equation can be notated as L ≈ 4πR2σT4. More » Science Physics Motion & Mechanics

Shaklee products that customers can buy online include Shaklee Life Energizing Shake, SmartHeart Blood Pressure Regimen, Shaklee 180 Turnaround Kit, Enfuselle Nutrition Therapy Skin Care Kit and Get Clean Starter Kit. Cu... More » Business & Finance Corporations

Newton's law of viscosity is a constitutive equation that describes how a fluid resists attempts to move through it. It holds true with some liquids and fails in others. Therefore, it is not considered a fundamental law ... More »

The equation to calculate a free-falling object's velocity or time spent falling is velocity equals gravitational acceleration multiplied by time. This occurs if three conditions are given: an initial velocity of zero, a... More »

The length of the pendulum is directly correlated to its period as per the pendulum equation: T = 2π√(L/g), where T is the period of the pendulum, L is its length, and g is the gravitational constant 9.8 m/s2. Regardless... More »

The most common equation for speed is: speed = distance / time. It can also be expressed as the time derivative of the distance traveled. Mathematically, it can be written as v = s/t, or v = (ds/dt), where speed is denot... More »

Shear stress is calculated by dividing the force exerted on an object by that object's cross-sectional area. Shear stress is one of the three primary stresses present in nature, which also includes tension and compressio... More »