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 […]
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 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? […]
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 […]
Is thyroid the largest endocrine gland?
Is thyroid the largest endocrine gland? The thyroid is our body’s biggest endocrine gland, and regulates important metabolic processes connected to our heart rate, body temperature and energy levels. Which is the largest endocrine gland pituitary gland thyroid gland thymus gland adrenal gland? Thymus is the primary lymphoid organ in which T cells mature. It […]
What are the charges of Al2O3?
Where should an object should be placed so that a real and inverted image of same size is obtained by a convex lens?
Is it OK to end a sentence with a preposition?
Is a compound microscope 2d or 3d?
Is a compound microscope 2d or 3d? Compound microscopes are light illuminated. The image seen with this type of microscope is two dimensional. This microscope is the most commonly used. You can view individual cells, even living ones. What are the application of compound microscope? Compound microscopes are used to view small samples that can […]
Why do bearings have 3 digits?
Why do bearings have 3 digits? A bearing is a direction, expressed as a three-figure number. Bearings are measured clockwise from north. Bearings are always given as three figures because if you only wrote down 35°, it could easily be mistaken for 350°. Do bearings have a degrees sign? There are four main directions on […]