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solong [7]
3 years ago
6

what is one example of the use of an infrared sensor? Track shipments, monitor building exit and entry, water flows without turn

ing on a facet, or barcode scanner
Physics
2 answers:
kap26 [50]3 years ago
6 0
<span>Your answer should be water flows without turning on a facet. Hope this helps!
</span>
Yuki888 [10]3 years ago
3 0

Answer:

The correct answer is option D, bar-code scanner

Explanation:

Barcode scanners are low scale emission devices that are tagged as “2A” laser devices. These scanners are able to emit radiations which hit the barcode and then get reflected. The reflected lights is received by the same scanner which further interprets the signals to understand the message received and match it with the barcode.

Commonly,  a barcode scanner is made up of an Infrared emitter and infrared detector.

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What is the mass of an object that requires a force of 30 N to accelerate at a rate of 5 m/sec2 ?
Anastaziya [24]
M=F/A
Which means 30 divided by 5 m/s is 6kg(mass)
8 0
3 years ago
Analyzing the Light Bulb: You should have noticed that the light bulb doesn't have a single well-defined "resistance," since the
VLD [36.1K]

Answer:

Resistance increases with increase in temperature which depends on power supplied which also depends on voltage.

Thermal expansion will make resistance larger.

Explanation:

Light bulb is a good example of a filament lamp. If we plot the graph of voltage against current we will notice that resistance is constant at constant temperature.

The filament heats up when an electric current passes through it, and produces light as a result.

The resistance of a lamp increases as the temperature of its filament increases. The current flowing through a filament lamp is not directly proportional to the voltage across it.

tensile stress begins to appear in resistor as the temperature rises. Thus, the resistance value increases as the temperature rises. Resistance value can only decrease as the temperature rises in case of thin film resistor with aluminium substrate.

In case of a filament bulb, the resistance will increase as increase in length of the wire. The thermal expansion in this regard is linear expansivity in which resistance is proportional to length of the wire.

Resistance therefore get larger.

6 0
3 years ago
Suppose that a worker in Freedonia can produce either 6 units of corn or 2 units of wheat per year, and a worker in Sylvania can
Salsk061 [2.6K]

Answer:

a 30 units of corn and 30 units of wheat.

Explanation:

Initially freedonia has 5 workers producing 30 units of of corn (6 units per worker) and another 5 workers producing 10 units of wheat (2 units per worker)

With the trade agreed between the two countries Freedonia can have all of it's 10 workers producing corn, thereby producing 60 units of corn

30 of these are traded for 30 units of wheat therefore allowing the country to consume 30 units of each product.

8 0
3 years ago
What is another name for a business name or manufacture's name
stich3 [128]

Answer:

brand name, or company

Explanation:

a brand name is  the kind of product they are selling. a company is the group of peaple that wok together.

8 0
3 years ago
Read 2 more answers
Why do we feel cool after perspiration/sweating?
pashok25 [27]
Because it is releasing heat from your body sweating and prespirating rlmelease heat so that you body will cool
7 0
2 years ago
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