Which substance is present in air? Standard Dry Air is made up of nitrogen, oxygen, argon, carbon dioxide, neon, helium, krypton, hydrogen, and xenon. It does not include water vapor because the amount of vapor changes based on humidity and temperature. Because air masses are constantly moving, Standard Dry Air is not accurate everywhere at […]
Which are the oldest mountains in the world?
Which are the oldest mountains in the world? Officially the oldest mountain range in the world, the Makhonjwa Mountains are commonly called the “Genesis of Life.” The geography of the mountains varies from rocky hills, to lush grasslands, and deeply wooded valleys. What are the most popular ranges in the world? Great Mountain Ranges Name […]
How do pipettes work?
What is space noise?
What is space noise? Cosmic noise, also known as galactic radio noise, is not actually sound, but a physical phenomenon derived from outside of the Earth’s atmosphere. Cosmic microwave background radiation (CMBR) from outer space is also a form of cosmic noise. How can we still see the CMB? You can’t see the CMB with […]
What is direction of acceleration vector?
What is direction of acceleration vector? Acceleration is a vector in the same direction as the change in velocity, Δv. Since velocity is a vector, it can change either in magnitude or in direction. Acceleration is therefore a change in either speed or direction, or both. What direction is the initial velocity vector? The two […]
What do you notice about the colors of the high pressure and low pressure symbols?
What do you notice about the colors of the high pressure and low pressure symbols? The colors of high and low pressure areas are chosen to represent what occurs aloft, not at the surface. Lows are composed of warm rising air; highs of cold sinking air. That’s why highs are represented by blue, which equates […]
What causes a Type 1 supernova to detonate?
What causes a Type 1 supernova to detonate? What causes a Type I supernova to detonate? In a core-collapse supernova, the outer part of the core rebounds from the inner, high-density core, destroying the entire outer part of the star. What is left behind after a Type 1 supernova? Supernova remnant, nebula left behind after […]
When a mass M is attached to a vertical spring and slowly released?
When a mass M is attached to a vertical spring and slowly released? An object of a mass M is attached to a vertical spring which slowly lowers to equilibrium position. This extends the spring x. If the same objects is attached to the same vertical spring but permitted to fall suddenly instead, then the […]
What is the starting point in supply strategy?
What is the starting point in supply strategy? Supply Markets are the starting point for Supply Chains. How does Walmart use CPFR? Collaborative Planning, Forecasting, and Replenishment (CPFR) Of course, now Walmart uses Retail Link and Supplier Scorecards to collaborate with all Walmart suppliers on planning, forecasting, and replenishment. The result is a partnership relationship […]
What is covalent bond write its properties?
What is covalent bond write its properties? Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds. Is h20 a double covalent bond? i.e. $$H$$ bonding with other molecules of water but […]