Answer:
true
Explanation:
An intranet is a computer network for sharing information, collaboration tools, operational systems, and other computing services within an organization, usually to the exclusion of access by outsiders. ... Intranets can also be used to facilitate working in groups or via teleconferences.
convection requires a medium is not the main difference, it is simply the most obvious aspect of what is a fundamentally different mechanism for transfering energy. Convection is the transfer of energy by movement of a medium, whereas radiation is the transfer of energy by, well, thermal radiation. Conduction also requires a medium, but, again, it is a fundamentally different mechanism than either convection or radiation; in this case it is the transfer of energy through a medium.
Unfortunately, analogies are hard but if you can visualize the particles involved, it would help. Picture the red hot iron you mentioned. On a molecular level, the material is emitting lots and lots of photons (hence why it is glowing red). The creation of these photons takes energy; energy from the heat of the iron. These photons leave the iron, pass through the environment, and eventually collide with some other object where they are absorbed and deposit their energy. This is radiative heat transfer. If that energy is deposited on your retina or a CCD (like in a digital camera), an image forms over time. This is how infrared goggles work and they would work equally well in high vacuum as here on earth.
In conduction, the next simplest example, there is no generation of photons (physics nerds forgive me for the sake of simplicity). The individual atoms in the object are vibrating with heat energy. As each atom gains energy from it's more energetic neighbors, so it gives up energy to its less energetic ones. Over time, the heat "travels" through the object.
In convection, the molecules of gas near the object gain energy, like in the conduction case, but those same molecules that gained energy then travel through the environment to some other location where they then give off their heat energy.
In summary:
radiation = generated and absorbed photonsconduction = molecules exciting their neighbors succesivelyconvection = molecules heated like in conduction, but then move to another location
Cloud is a kind of storage, which is an internet service that provides storage to computer or mobile users. This information technology enables ubiquitous access to shared pools of configurable system resources.
Time-critical data and images can be immediately viewed while away from a main office or location.
If $due_date contains a DateTime object, $due_date_diff will contain
c. a DateInterval object
Explanation:
- The DateInterval class ¶ represents a date interval.
- A date interval stores either a fixed amount of time (in years, months, days, hours etc) or a relative time string in the format that DateTime's constructor supports.
- The diff method is just as easy to use, but provides an extra piece of information: total days. This is important because when using the DateTime object to find a difference, we have a source and destination date, and therefore we can reduce the units of time into larger denominations. However, having the total number of days in between is a valuable piece of information.
- The PHP DateTime class has three methods that work with a DateInterval object:
- add
- sub
- diff
Properties
- y :Number of years.
-
m :Number of months.
-
d :Number of days.
-
h :Number of hours.
-
i :Number of minutes.
-
s :Number of seconds.
<span>Internet
addiction is a growing social issue in which is being debate worldwide nowadays.
A psychologist doing basic science and a psychologist practicing applied
science differ in the approach with regards to this problematic computer use
issue or Internet addiction. A psychologist doing science approach made their
research in order to explain what is the issue or problem all about while the
psychologist practicing applied science use the principles to after or solve
the issue or problem. </span>
