Category: Physics

What are the 7 classifications? There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species. What is an easy way to remember the seven levels of classification? Biology. To remember the order of taxa in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species, [Variety]): “Dear King Philip Came Over […]

What is the main difference between a hub and switch? Hub and Switch are both network connecting devices. Hub works at physical layer and is responsible to transmit the signal to port to respond where the signal was received whereas Switch enable connection setting and terminating based on need. Is more intelligent than a hub […]

How do I know if my car has anti-lock brakes? If your vehicle is equipped with an ABS or anti-lock braking system, an alert light is going to illuminate every time you turn your key to the power or on position. This alert light will be yellow in color and will display the words “anti-lock” […]

Why are plants propagated by seed? Seeds are easy to transport and store. The variation in the plants produced by seed allows plant breeders to develop new varieties. There is a low risk of transferring diseases from the parent plant to the new plant. Some plants can only be raised by seed, for example, annual […]

Is matrix a subspace? The column space and the null space of a matrix are both subspaces, so they are both spans. Can R3 2 vectors span R2? Because R3/⊂R2 , so vectors in the former are not even vectors in the latter. Note that you cannot draw the given vectors in the plane R2: […]

At what age can a child begin to form large concepts? 2 years What age does a child become self aware? As the well-known infant researcher Daniel Stern notes, at about 18 months, children begin to show evidence of self-awareness. This evidence includes infants’ behavior in front of a mirror, their use of verbal labels […]

What is a rule for making a positive ion which has positive charge? Protons are identical in the atom and ion. Positive charge is caused by lack of electrons. A positive ion is formed by the loss of negatively charged electrons. Although the number of protons does not change in the ion, there is an […]

At what height from the surface of Earth is the value of g decreases by 2%? Answer (2) Acceleration due to gravity above the surface of earth at a height h is given 2 ‘ 1 ⎛ ⎞   ⎜ ⎟ ⎝ ⎠ e h g g R here, g ‘ = 0.98 g […]

Why are analogous colors important? Analogous colors are a very easy way to promote a sense of flow on your website. Rather than looking for bold, clashing colors, designers can use a more understated scheme to promote a sense of security and serenity. What is the best example of analogous color scheme? Here are a […]

Can work be done without change in kinetic energy? This means that if an object’s kinetic energy doesn’t change, then no work has been done on the object – whether or not a force has been exerted. slowing down, in which case the object’s kinetic energy decreases, or changing direction, in which case the object’s […]