What happens to the energy when you place a liquid in the freezer? When water freezes it gives up some of the water’s energy. This energy that is given up is the latent heat of freezing. When the water was freezing latent heat of freezing energy was being released. Energy is being transferred even through […]
Can you use the quadratic formula for inequalities?
Can you use the quadratic formula for inequalities? In other words, a quadratic inequality is in standard form when the inequality is set to 0. Just like in a quadratic equation, the degree of the polynomial expression is two. This method of solving quadratic inequalities only works if the quadratic factors. What is the purpose […]
How can a fully dressed person at rest in the middle of a pond on perfectly frictionless ice get to shore?
What is the SI unit of time?
What is the SI unit of time? second. The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the cesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, […]
Why do pennies sink in water?
Why do pennies sink in water? The reason the pennies sink in water is because of an idea called density. The pennies have more density than the water, and so the pennies sink. Anything with more density than water will sink in water, but other objects that have less density than water will float. What […]
How high will it bounce rebound ratios?
How high will it bounce rebound ratios? Tennis balls: Must rebound approximately 111cm when dropped from 200 cm. Soccer balls: Must rebound approximately 120cm when dropped form 200cm onto a steel plate. Basketballs: Must rebound approximately 53.5 inches when dropped from 72 inches onto a wooden floor. How can you tell how high a ball […]
Why protein is not a genetic material?
Why protein is not a genetic material? For a material to be genetic material, it has to replicate, it must be stable both structurally and chemically stable. Furthermore, it must be able to provide a scope for mutations eventually, key for evolution. Where are proteins made? Ribosomes Are proteins made in cytoplasm? Proteins all begin […]
What is the recommended amount of physical activity for children Topic test?
What is the recommended amount of physical activity for children Topic test? Kids and teens should get 60 minutes or more of moderate to vigorous physical activity daily. Toddlers and preschool children should play actively several times a day. Toddlers should get at least 60 minutes active play every day and preschoolers should have at […]
What does a black triangle mean?
What does a black triangle mean? The Black Triangle. Just as gay men were forced to wear pink triangles in the concentration camps, many lesbians were forced to wear black triangles, which signified that they (like prostitutes and unmarried women of the streets) did not live according to the Nazis’ ideas of correct female behavior. […]
What are 3 basic characteristics of molecular compounds?
What are 3 basic characteristics of molecular compounds? Physical Properties of Molecular Compounds Property Ionic Compounds Molecular Compounds Physical state at room temperature Solid Gas, liquid, or solid Water solubility Usually high Variable Melting and boiling temperatures Generally high Generally low Electrical conductivity Good when molten or in solution Poor Why do molecular compounds have […]