Category: Physics

What Hall voltage is produced by a 0 What is Hall effect and Hall voltage? The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. It was discovered […]

What is the correct order highest temperature on top for stellar classification? The seven main types are M, K, G, F, A, B and O. M stars are the coldest stars and O stars are the hottest. What is the main sequence stage? The main sequence is the stage where a star spends most of […]

What is the formula for projectile motion? h = v 0 y 2 2 g . This equation defines the maximum height of a projectile above its launch position and it depends only on the vertical component of the initial velocity. A rock is thrown horizontally off a cliff 100.0 m high with a velocity […]

What is F MA Math? The famous formula is: F = ma. “Newton’s Second Law of Motion” (F is force, m is mass and a is acceleration) Do you need calculus for F MA? F=ma does not require any Calculus background. It is a test designed to challenge your understanding and intuitive on the most […]

What are examples of constructive criticism? 6 constructive criticism examples that will help you do it right Attendance. Not helpful: “You’re always late to work. Work quality. Not helpful: “The last few projects you’ve turned in are terrible! Motivation. Not helpful: “You need to stop slacking off at work. Teamwork. Time management. Communication. How do […]

Does increasing effect size increase power? The statistical power of a significance test depends on: • The sample size (n): when n increases, the power increases; • The significance level (α): when α increases, the power increases; • The effect size (explained below): when the effect size increases, the power increases. Why does increasing the […]

Does removing a catalytic converter make an engine consume more fuel? Some vehicles experience more fuel consumption. Some car owners are experiencing more fuel consumption after removing their catalytic converters. The explanation for this is because their vehicle’s O2 sensors readings are not correct which cause it to require more usage of fuel. Will removing […]

What causes thermal noise? Thermal noise is generated as a result of thermal agitation of the charge carriers which are typically electrons within an electrical conductor. This vibration is dependent upon the temperature – the higher the temperature, the higher the agitation and hence the thermal noise level. How is thermal noise calculated? The magnitude […]

What is the critical angle of ice? 49.8 degrees How do you find the critical angle in Snell’s law? The critical angle can be calculated from Snell’s law by setting the refraction angle equal to 90°. For any angle of incidence less than the critical angle, part of the incident light will be transmitted and […]

What is steam reforming process? Steam reforming or steam methane reforming is a method for producing syngas (hydrogen and carbon monoxide) by reaction of hydrocarbons with water. Commonly natural gas is the feedstock. The main purpose of this technology is hydrogen production. The reaction is strongly endothermic (consumes heat, ΔHr = 206 kJ/mol). What is […]