Category: Physics

What is the inverse tangent equal to? The inverse function of tangent. Basic idea: To find tan-1 1, we ask “what angle has tangent equal to 1?” The answer is 45°. As a result we say that tan-1 1 = 45°. In radians this is tan-1 1 = π/4. What is the opposite of tangent? […]

What causes the most greenhouse gases? The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation. Transportation (29 percent of 2019 greenhouse gas emissions) – The transportation sector generates the largest share of greenhouse gas emissions. What country is the largest […]

What are the five characteristics of matter? Early Indian philosophers classified matter in the form of five basic elements – the ‘Panch Tatva’ -air, earth, fire, sky and water. Even though matter can be found all over the Universe, you only find it in a few forms, based on their physical and chemical properties. What […]

What are 2 materials that are good reflectors of light? Therefore, substances that could be listed on the “good reflectors” side of your table are: metals (aluminum, copper, silver, gold, spoons, etc) and mirrors. On the “poor reflectors” side of the table, the following items could be listed: cotton, paper, carpet, jeans, concrete, and grass. […]

What is a variation equation? In the equation y = mx + b, if m is a nonzero constant and b = 0, then you have the function y = mx (often written y = kx), which is called a direct variation. In this function, m (or k) is called the constant of proportionality or […]

What daily value is considered high in a nutrient? As a general guide: 5% DV or less of a nutrient per serving is considered low. 20% DV or more of a nutrient per serving is considered high. What is the 5% and 20% rule? The 5/20 Rule (Purple) Always remember the 5/20 rule: 5% or […]

What are the 3 lines of immune defense? The human body has three primary lines of defense to fight against foreign invaders, including viruses, bacteria, and fungi. The immune system’s three lines of defense include physical and chemical barriers, non-specific innate responses, and specific adaptive responses. What are three major barriers to pathogens? Natural barriers […]

What do you mean by physical? Physical indicates connected with, pertaining to, the animal or human body as a material organism: physical strength, exercise. Bodily means belonging to, concerned with, the human body as distinct from the mind or spirit: bodily pain or suffering. What do you mean by physical causes? Physical qualities, actions, or […]

What are the 7 living generations? It begins by introducing the seven living generations of Americans: The Greatest Generation (born 1901-27), The Silent Generation (born 1928-45), Baby Boomers (born 1946-64), Generation X (born 1965-80), Millennials (born 1981-97), Generation Z (born 1998-2010), and the burgeoning Generation Alpha (born 2011-25). How many generations is 2%? How many […]

Which country has reached Mars? India Are Mars rovers still active? As of May 2021, Curiosity is still active, while Spirit, Opportunity, and Sojourner completed their missions before losing contact. Is India the first country to reach Mars? It made India the first Asian nation to reach Martian orbit and the first nation in the […]