How do you read a spring scale? Spring scales measure weight (not mass) in grams….To Use a Spring Scale: Hang the object to be measured from the spring scale hook. Read the grams scale for weight. Read the Newtons scale for force. We will mostly be using Newtons during the module. What can you use […]
How does temperature increase reaction rate?
How does temperature increase reaction rate? An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. Why are some reaction very fast? Reactions in […]
Why do enzymes increase the rate of reaction?
Why do enzymes increase the rate of reaction? Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. How can one increase or decrease the rate of enzyme reactions? Factors affecting enzyme activity […]
How do you sketch a graph of a quadratic equation?
Does losing a limb shorten your life?
Does losing a limb shorten your life? Researchers have found the five-year mortality rate in those who are able to walk after major amputation to be 30 percent in comparison to 69 percent in those unable to ambulate. How painful is losing a limb? “Phantom pains” is a term that describes ongoing, physical sensation in […]
Who proposed relationship between atmospheric carbon dioxide concentration and temperature?
Who proposed relationship between atmospheric carbon dioxide concentration and temperature? Arrhenius suggested a doubling of the CO2 concentration would lead to a 5oC temperature rise. He and Thomas Chamberlin calculated that human activities could warm the earth by adding carbon dioxide to the atmosphere. What is the relationship between depth and CO2 level? At typical […]
How do you make a wheel out of cardboard?
How many asteroids hit Earth each year?
How many asteroids hit Earth each year? 6100 meteors Why do asteroids burn up? When the meteor hits the atmosphere, the air in front of it compresses incredibly quickly. When a gas is compressed, its temperature rises. This causes the meteor to heat up so much that it glows. Why do shooting stars burn up? […]
What does the front limitation help determine?
What does the front limitation help determine? When you want to know how far forward you can pull into a parking space or where to stop at an intersection, you will need to determine where the front of your car ends, i.e., where your car’s front limitation is. What is a staggered stop? Staggered stops […]
How is atomic number calculated?
How is atomic number calculated? The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = […]