Complete Question:
Which technology is set up on the marketing team's phones?
a) Bluetooth
b) Tethering
c) NFC
d) Hotspot
Answer:
NFC
Explanation:
Near Field Communication (NFC) is a short-range wireless connectivity standard that uses magnetic field induction to enable communication between devices when brought within a few centimetres from each other. NFC offers a secured communication between connected electronic devices with simple setup that can be used to bootstrap more-capable wireless connections. It only covers a range of 10 cm to 20 cm.
None of the other options can transmit or share information for payments among the team except the NFC. NFC is also suitable for this setup because only a small range is expected to be covered.
When two sound waves of similar frequency interfere with each other, there is a fluctuating sound heard which is periodic and repeating. This fluctuating sound is called beat. Beat frequency( number of beats per second) is equal to the difference of the frequency of the two sound waves.
So, sound waves of frequency 400 Hz and 404 Hz will produce 4 beats per second.
Copper, gold and silver are three of them.
Answer: The correct answer is "It has increased surface levels of ultraviolet light".
Explanation:
Ozone depletion: The ozone layer in the atmosphere protects the earth's surface from the exposure of the harmful radiation but due to the hole in the ozone layer, the harmful radiation is reaching our earth's surface.
The ultraviolet radiation is very harmful radiation. It can cause skin cancer and eye cataract.
When the ozone layer is hit by the ultraviolet radiation then ozone will break into oxygen molecule and oxygen atom. Oxygen atom is unstable then it will react with another oxygen molecule. In this way, the ozone layer is not damaged.
CFC (chloro fluoro carbon) is the pollutant which are responsible for the ozone depletion. Due to the depletion of the ozone layer, the surface levels of ultraviolet light has increased.
Ideal gas has several important properties that must be followed by real gases to behave like an ideal gas
so here we can say
1. all gas molecules moves at very fast speed in random direction
2. there should not be any interaction force between molecules of gas
3. all gas molecules must have to follow Newton's II law
4. There is no effect of gravity on the molecules of gas
so here if all above conditions are followed by gas then
the condition must be followed only at low pressure and high temperature
so correct answer is
<em>(2) low pressure and high temperature</em>
