Is the relationship between frequency and wavelength direct? Wavelength (typically measured in nanometers) is the distance between two points in a wave. Frequency and wavelength have both direct and inverse relationships. The wave with shorter wavelength will have a higher frequency while a longer wavelength will have a lower frequency. Is frequency and energy directly […]
Why do plant cells have cell walls and animal cells do not?
Why do plant cells have cell walls and animal cells do not? Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but […]
How many protons and electrons are in oxygen?
How many protons and electrons are in oxygen? 8 Is the number of nucleons equal to the number of electrons? The atomic number gives the number of protons in the atom. The number of nucleons gives the total number of protons plus neutrons in the atom. Since an atom is electrically neutral, an atom has […]
Are darkroom chemicals dangerous?
Are darkroom chemicals dangerous? The majority of chemicals used in the black and white darkroom are classified in the range of non-toxic to slightly toxic. However, black and white developers can be toxic, especially if when ingested or inhaled or when in contact with bare skin. Are the chemicals used to develop film Toxic? Most […]
What happens when entropy decreases?
What happens when entropy decreases? The total entropy of a system either increases or remains constant in any process; it never decreases. For example, heat transfer cannot occur spontaneously from cold to hot, because entropy would decrease. Entropy is very different from energy. Entropy is not conserved but increases in all real processes. What causes […]
How many square feet is 5 feet?
What is the basic purpose of Ccgt?
What is the basic purpose of Ccgt? The design uses a gas turbine to create electricity and then captures the resulting waste heat to create steam, which in turn drives a steam turbine significantly increasing the system’s power output without any increase in fuel. What is a simple cycle? A simple cycle is a cycle […]
What is the power of an appliance?
What is the power of an appliance? The power of an electrical appliance tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W = 1 J/s (joule/second). Appliances used for heating have a much higher rating than those used to produce light or sound. […]