Category: Physics

What are the two examples of particulate air matter? Particulates, or particulate matter (PM), refer to any mixture of solid particles or liquid droplets that remain suspended in the atmosphere for appreciable time periods. Examples of particulates are dust and salt particles, and water and sulphuric acid droplets. What are the top 3 sources of […]

What are the types of grounding? The types of system grounding normally used in industrial and commercial power systems are solid grounding, low resistance grounding, high resistance grounding, and ungrounded. What is the process of grounding? Grounding is the process of removing the excess charge on an object by means of the transfer of electrons […]

Which best describes a radioactive isotope? An isotope with an unstable nucleus which decomposes readily and results in the emission of radiation and a nuclear electron or helium nucleus achieves a stable nuclear composition is known as a radioactive isotope. For example, Thus, we can conclude that an atom is unstable best describes a radioactive […]

How can I increase oxygen in my blood? How does oxygen get into the bloodstream? Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body. Can low oxygen levels be […]

Which will have the highest thermal energy? gas Which is the most heat energy? What are the characteristics of thermal energy? Thermal energy refers to several distinct physical concepts, such as the internal energy of a system; heat or sensible heat, which are defined as types of energy transfer (as is work); or for the […]

What shape is an orbit? elliptical What is a bound orbit? A bound orbit is one in which the light object makes many loops around the heavier object. For example, the planets are in bound orbits around the Sun. What’s the difference between a bound and unbound orbit? What is the difference between a bound […]

What is called shielding effect? Electrons in an atom can shield each other from the pull of the nucleus. This effect, called the shielding effect, describes the decrease in attraction between an electron and the nucleus in any atom with more than one electron shell. The more shielding that occurs, the further the valence shell […]

How do you explain the summer solstice to a child? The summer solstice is the longest day of the year when the Earth’s North Pole is tilted closest to the sun. There are two solstices each year. One in June and one in December. The time of the solstice is the same all over the […]

Can we see stars at night? Even though the stars that we see in the night sky are all very far away, we can see them not by actually being able to resolve their sizes, but by measuring the light that they produce. If we take the difference of the apparent and absolute magnitudes of […]

In which direction do gas molecules move? Gas molecules move in straight lines in all directions, colliding frequently with one another and with the walls of the container. What are the 4 variables used to describe gases? Ideal Gases Ideal gas, or perfect gas, is the theoretical substance that helps establish the relationship of four […]