Category: Physics

What are the 11 gases on the periodic table? Gaseous Elements (stp) The gaseous element group; hydrogen (H), nitogen (N), oxygen (O), fluorine (F), chlorine (Cl) and noble gases helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn) are gases at standard temperature and pressure (STP). Is gas a element? Several of […]

How is good stratospheric ozone formed? Stratospheric ozone. Stratospheric ozone is natu- rally formed in chemical reactions involving ultraviolet sunlight and oxygen molecules, which make up 21% of the atmosphere. In the first step, sunlight breaks apart one oxygen molecule (O2) to produce two oxygen atoms (2 O) (see Figure Q2-1). What of the following […]

Which has the strongest dispersion force? iodine molecules Do London forces exist in all substances? London forces exist in ALL substances. London forces will be strongest in large molecules (or ions, or atoms) and weakest in small molecules. In larger molecules, London forces tend to be stronger than dipole-dipole forces (even stronger than hydrogen bonds). […]

What happens to the potential energy of ice while it melts? When ice or any other solid melts, its potential energy increases. Indeed, this is the only increase in energy, since the thermal kinetic energy, or temperature, does not increase while melting. At each phase change of water, whether ice to liquid water or liquid […]

What advantages do plant cells have over animal cells? Plant cell walls are rigid membranes on the outermost part of the cell. The cell wall provides a structured shape for the cell, helping the cell retain its form and shape. The cell wall also controls the rate of replication, allowing plant cells to replicate at […]

How is total force calculated? We can figure out the total force by subtracting one force from the other. For example, if a block is being pushed with a force of 7 newtons left and 4 newtons right, the total force on the block is 3 newtons left. Is swimming a push or pull force? […]

When you eat food what type of energy is this? chemical energy What is the 10% rule of an energy pyramid? The 10% rule states that between one trophic level to the next only 10% of the energy is passed on to the next. So if producers have 10,000 J of energy stored through photosynthesis, […]

When balancing equations The rule is that you can only add change and remove? 1: Balancing Equations. You cannot change subscripts in a chemical formula to balance a chemical equation; you can change only the coefficients. Changing subscripts changes the ratios of atoms in the molecule and the resulting chemical properties. Is 2H₂ o₂ → […]

How long can you drive with a power steering leak? In this case, topping off the fluid is necessary every time you cover a few miles as it keeps you driving indefinitely. For instance, 14o z of fluid is added into the pump to drive for 400 miles approximately. However, if the level of the […]

What is the working of rectifier? A rectifier is a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC). Rectifiers can take a wide variety of physical forms, from vacuum tube diodes and crystal radio receivers to modern silicon-based designs. What is 6 pulse rectifier? It is used in […]