How low can I run my solar battery? To ensure longevity and to keep the lights on, never discharge batteries below 80% DOD—50% DOD or lower is ideal. All batteries require extra power reserves for days with low renewable energy production or higher electrical usage. Why does my inverter battery drain so fast? Excess usage […]
Has anyone been killed by a Tesla coil?
Has anyone been killed by a Tesla coil? Death. There is a long-standing rumour that Transtrom was electrocuted during one of his demonstrations when one of these long sparks reached the primary coil of the device, thus coupling and drawing enough current to kill him, making him one of only three people to have been […]
How do you classify protists?
How do you classify protists? The protists can be classified into one of three main categories, animal-like, plant-like, and fungus-like. Grouping into one of the three categories is based on an organism’s mode of reproduction, method of nutrition, and motility. Which best describes the offspring of a protist? Asexual binary fission in protists is one […]
How do you make a wheel out of cardboard?
What is the relationship or evidence between a hypothesis and prediction?
What is the relationship or evidence between a hypothesis and prediction? Hypothesis and prediction are both a type of guess. That’s why many people get the two confused. However, the hypothesis is an educated, testable guess in science. A prediction uses observable phenomena to make a future projection. How do you write a prediction for […]
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 […]
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 […]
How do you read a spring scale?
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 […]
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 […]
What is the difference between if/then and if/then else statement?
What is the difference between if/then and if/then else statement? “if/then” lets you test a condition and provide instructions for when the test is true. “if/else” lets you test a condition and provide instructions for when the test is true AND when it is false. Can you have 3 IF statements in Excel? It is […]