Category: Physics

Under which condition is no work done a force pushes an object? The force exerted by the person is an upward force equal to the weight of the box, and that force is perpendicular to the motion. If there is no motion in the direction of the force, then no work is done by that […]

What is the difference between reflective and reflexive? Reflection might lead to insight about something not noticed in time, pinpointing perhaps when the detail was missed. Reflexivity is finding strategies to question our own attitudes, thought processes, values, assumptions, prejudices and habitual actions, to strive to understand our complex roles in relation to others. What […]

How much force does it take to move a railcar? First, a force of 2 to 5 pounds per ton of train weight is required to move on straight level track. At very slow yard speeds only 2 to 3 pounds is needed while increasing to about 5 pounds at higher speeds. This force is […]

What is the maximum displacement in SHM? Maximum displacement is the amplitude A. The angular frequency ω , period T, and frequency f of a simple harmonic oscillator are given by ω=√km ω = k m , T=2π√mk,andf=12π√km T = 2 π m k , and f = 1 2 π k m , where […]

How much HF is lethal? Hydrofluoric acid is one of the strongest acids known that has a strong lipophilic ability. Ingestions of more than 20 mg/kg body weight are considered a lethal dose. Even after dermal exposure, the fatal prognosis is caused by severe electrolyte disturbances, especially hypocalcemia. What does an HF burn feel like? […]

What is the derivative of x? The derivative of a function y = f(x) of a variable x is a measure of the rate at which the value y of the function changes with respect to the change of the variable x. What does f ‘( x mean? The expression “f (x)” means “a formula, […]

What is the Bergeron process in simple terms? The process by which precipitation is initiated in a mixed cloud with a temperature below freezing. Because the equilibrium vapour pressure of water vapour with respect to ice is less than that with respect to liquid water, ice crystals grow at the expense of supercooled water droplets. […]

Do humans and plants share a common ancestor? Originally Answered: Do plants and humans have a common ancestor? Yes. The last common ancestor would have been an early eukaryote protist, around 2 billion yeras ago. What is the most intelligent single celled organism? This Single-Celled Animal Makes Complex ‘Decisions’ Even Without a Nervous System. In […]

What Hertz can humans hear by age? People of All ages without a hearing impairment should be able to hear the 8000hz. People under 50 should be able to hear the 12,000hz and people under 40, the 15,000hz. Under 30s should hear the 16,000hz, and the 17,000hz is receivable for those under 24. MORE: Test! […]

What is the thermoelectric power? The conversion of thermal energy into electrical energy. Thermoelectric generation relies on a fuel source (e.g. fossil, nuclear, biomass, geothermal, or solar) to heat a fluid to drive a turbine. What is thermoelectric diagram? Thermo-electric Diagram. A diagram indicating the change in potential difference for a fixed difference of temperature […]