Category: Physics

Who invented phone batteries? Rachid Yazami What came first battery or electricity? In 1799, Italian physicist Alessandro Volta created the first battery by stacking alternating layers of zinc, brine-soaked pasteboard or cloth, and silver. This arrangement, called a voltaic pile, was not the first device to create electricity, but it was the first to emit […]

What is the chemical reaction of photosynthesis? The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, […]

What are the 3 types of symmetry in animals? Animals can be classified by three types of body plan symmetry: radial symmetry, bilateral symmetry, and asymmetry. Which animal is radially symmetrical? Because of the circular arrangement of their parts, radially symmetrical animals do not have distinct front or back ends. They may have distinct top […]

Do identical twins come from Mom or Dad? According to Stanford, the likelihood of twins during any particular pregnancy comes from the mother, because, as they put it, “A father’s genes can’t make a woman release two eggs.” If you’re the woman who is trying to conceive though, it’s not just your mom’s genetics that […]

Is a bowling ball an unbalanced force? This is like the pins. The pins stay idle on the lane until the ball hits them. This is like the bowling ball. The rolling ball hits the pins and creates an unbalanced force which will cause the pins to move because the pushing force of the ball […]

Is Slate harder than shale? Slate is the metamorphosed form of the sedimentary rock called shale. However, it is much harder than shale and breaks with sharp edges. How do you know if its slate or shale? Shale has quite a dull look whereas slate shines and looks silky in the sun. Moving on, when […]

Is genetic engineering beneficial or harmful? The possible benefits of genetic engineering include: More nutritious food. Tastier food. Disease- and drought-resistant plants that require fewer environmental resources (such as water and fertilizer) Why do genetic disorders occur? Genetic disorders can be caused by a mutation in one gene (monogenic disorder), by mutations in multiple genes […]

What are 2 academic integrity violations? Cheating: Using or attempting to use unauthorized assistance, information or study aids in any academic exercise. Copying answers from or looking at another student’s exam. Accessing or possessing any material not expressly permitted during an exam, such as crib sheets, notes, books. What happens if you break academic integrity? […]

Does cutting grass make it grow faster? Grass actually grows faster after it’s been cut short as it tries to rebuild itself to its genetic norm. A good in-season height for most turfgrasses is 2½ to 3 inches — typically the highest setting on mowers. Does grass grow slower in summer? Growth will slow, color […]

Does adding salt to ice increases the melting point? The melting point of pure water ice is 32°F (0°C). Adding salt — or other substances — to ice lowers the melting point of ice. Why does mcdonalds ice not melt? Because chilled water is less dense than salt water, the melted ice cube water floats […]