Category: Physics

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 […]

Why is current constant in a circuit? The electrons at the end of the circuit are of the same amount and of course of the same charge. Just as the battery speeds up an electron, the electron hits to another one and remains constant speed. Why is voltage constant in parallel? The voltage is the […]

Is thermal energy the total kinetic energy of an object? Thermal energy is the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is sometimes confused with internal energy or thermodynamic energy. They consist of the sum of the internal kinetic energy (thermal energy) and 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, […]

What element is a good insulator? Examples of good conductors are sliver, tin, and lead. Good insulators contain 8 electrons which mean they are stable(noble gasses group 18). Insulators can’t be easily transported from one atom to another and nonmetals make good insulators. Three examples of good insulators are sulfur, silicon, and rubber. What makes […]

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 […]

Are darkroom chemicals dangerous? The majority of chemicals used in the black and white darkroom are classified in the range of non-toxic to slightly toxic. However, black and white developers can be toxic, especially if when ingested or inhaled or when in contact with bare skin. Are the chemicals used to develop film Toxic? Most […]

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 […]

Are we due for another Ice Age? Researchers used data on Earth’s orbit to find the historical warm interglacial period that looks most like the current one and from this have predicted that the next ice age would usually begin within 1,500 years. What is the biggest problem with climate change? Climate change is already […]