Category: Physics

What happens when entropy decreases? The total entropy of a system either increases or remains constant in any process; it never decreases. For example, heat transfer cannot occur spontaneously from cold to hot, because entropy would decrease. Entropy is very different from energy. Entropy is not conserved but increases in all real processes. What causes […]

Is the relationship between frequency and wavelength direct? Wavelength (typically measured in nanometers) is the distance between two points in a wave. Frequency and wavelength have both direct and inverse relationships. The wave with shorter wavelength will have a higher frequency while a longer wavelength will have a lower frequency. Is frequency and energy directly […]

At what angle a player should throw a javelin to achieve maximum range? 45 degrees At what angle do you launch a ball to achieve longest range? The sine function reaches its largest output value, 1, with an input angle of 90 degrees, so we can see that for the longest-range punts 2θ = 90 […]

What is Heisenberg Uncertainty Principle explain? Heisenberg’s uncertainty principle is a key principle in quantum mechanics. Very roughly, it states that if we know everything about where a particle is located (the uncertainty of position is small), we know nothing about its momentum (the uncertainty of momentum is large), and vice versa. What is the […]

What is the power of an appliance? The power of an electrical appliance tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W = 1 J/s (joule/second). Appliances used for heating have a much higher rating than those used to produce light or sound. […]

Why does a straw look bigger in water? Place a straw in a glass of water, and behold: It looks broken. But below, when the light also travels through water, the refraction causes the image of the straw to be in a slightly different location. The water also acts as a type of magnifying lens, […]

How long does a 8 oz candle burn? 40 hours What is the burn time for soy candles? The burn time for soy candles varies based different variables, such as wick size, fragrance and type of soy wax used. For smaller candles with smaller wicks, they burn an average 7-9 hours per ounce of wax. […]

What is the definition of conceptual? The definition of conceptual is something having to do with the mind, or with mental concepts or philosophical or imaginary ideas. An example of conceptual is when you formulate an abstract philosophy to explain the world which cannot be proven or seen. What is an example of a conceptual […]

How much horsepower does a barge have? Power from their diesel engines ranges from 600 to over 10,000 horsepower. River barges also have flat bottoms and are usually 200′ long and 35′ wide. What is the most powerful tugboat in the world? FUN FACT: While the 309.6t bollard pull of the ALP Striker is surely […]

What are the features of a sedimentary rock? Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed. What type of minerals are found in […]