Which valve is required for a handwashing sink? mixing valve What is the height of a hand wash sink? 34 inches Why is it important to wash hands before eating? Washing your hands before eating a meal is a simple and effective method of infection prevention. When you eat without washing your hands, the bacteria […]
Is Cheating good in exams?
Is Cheating good in exams? This will result in a much higher average performance than an in-person exam would, putting anyone who does not cheat at a disadvantage as any grading on a curve would hurt him or her. Cheating, being a form of dishonesty, is wrong even when rampant. How can I cheat online […]
Why is the streak more reliable for mineral identification?
Why is the streak more reliable for mineral identification? Streak is the color of a mineral’s powder. Streak is a more reliable property than color because streak does not vary. Minerals that are the same color may have a different colored streak. To check streak, scrape the mineral across an unglazed porcelain plate (Figure 5). […]
Do solar panels add to global warming?
Do solar panels add to global warming? Solar panels over only part of the roof can supply most of the electricity to run a house. Volunteers in Oakland, California, help to install solar panels on homes. Making electricity from sunlight does not produce carbon dioxide and does not add to global warming. Can solar panels […]
What is the formula for calculating the resistance of wire?
What is the formula for calculating the resistance of wire? Specific Resistance (”ρ”) is a property of any conductive material, a figure used to determine the end-to-end resistance of a conductor given length and area in this formula: R = ρl/A. Specific resistance for materials are given in units of Ω-cmil/ft or Ω-meters (metric). What […]
Why is a dam bad for the environment?
Why is a dam bad for the environment? Dams store water, provide renewable energy and prevent floods. Unfortunately, they also worsen the impact of climate change. They release greenhouse gases, destroy carbon sinks in wetlands and oceans, deprive ecosystems of nutrients, destroy habitats, increase sea levels, waste water and displace poor communities. What are the […]
How much weight do astronauts lose?
How much weight do astronauts lose? Consequently, some muscles atrophy rapidly, and without regular exercise astronauts can lose up to 20% of their muscle mass in just 5 to 11 days. Do you feel hungry in space? Astronauts may have plenty of food to eat, but being in space can put a damper on their […]
What is the difference between metalloid and semiconductor?
What is the difference between metalloid and semiconductor? Metalloids are semiconductors because they are neither good nor poor conductors. The valence electrons of metals are not bound to any particular atom. Metalloids have the properties of both metals and nonmetals. Their electronic structures are intermediate between those of metals and nonmetals. What is metalloid give […]
Which statement best describes why the Milky Way is shaped a certain way?
Which statement best describes why the Milky Way is shaped a certain way? Which statement best describes why the Milky Way is shaped a certain way? The gravitational forces from the center of the Milky Way cause stars and solar systems to orbit around the center of the galaxy. The gravity from the sun causes […]
What are the 2 main types of crust?
What are the 2 main types of crust? Earth’s crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental […]