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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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If you travel 2 miles west then 4 miles south then what is your displacement in meters
Leokris [45]

Answer:

9656.06 meters because youd go 6 miles and 9656.06 is 6 miles but just in meters. I hope this helps :)

Explanation:

5 0
3 years ago
What is the difference between m/s and m.s.​
vfiekz [6]

Answer

m/s rate of change of dispalcement per sec. ie velocity

m/s^2 is (m/s)/s ie rate of change of velocity per sec. ie accelerationplanation:

5 0
3 years ago
Read 2 more answers
A 2.40 kgkg can of coffee moving at 1.50 m/sm/s in the +x+x-direction on a kitchen counter collides head-on with a 1.20 kgkg box
Monica [59]

Answer:

1.35 m/s in the +x direction

Explanation:

Mass of can of coffee, m = 2.4 kg

Initial velocity of can of coffee, u = 1.5 m/s

Mass of box of macaroni, M = 1.2 kg

Initial velocity of box of macaroni, U = 0 m/s

Final velocity of can of coffee, v = 0.825 m/s

We can find the final velocity of the box of macaroni, V, by using the Principle of Conservation of momentum:

Total initial momentum = Total final momentum

Momentum is given as the product of mass and velocity. Hence:

mu + MU = mv + MV

(2.4 * 1.5) + (1.2 * 0) = (2.4 * 0.825) + (1.2 * V)

3.6 + 0 = 1.98 + 1.2V

1.2V = 3.6 - 1.98 = 1.62

=> V = 1.62/1.2

V = 1.35 m/s

The final velocity of the box of macaroni is 1.35 m/s and it is in the +x direction.

3 0
3 years ago
The power in an electrical circuit is given by the equation p=/2 R, where /is the current flowing through the circuit and R is t
zzz [600]

Complete Question:

What is the power in a circuit that has a current of 12 amps and a resistance of 100 ohms?

Answer:

D. 14,400 watts

Explanation:

The electrical power of an electric circuit can be defined as a measure of the rate at which energy is either produced or absorbed in the circuit.

Mathematically, electrical power is given by the formula;

Electrical \; power = current * voltage

This ultimately implies that, the quantity (current times voltage ) is electrical power and it is measured (S.I units) in Watt (W).

<u>Given the following data;</u>

  • Current = 12 Amperes
  • Resistance = 100 Ohms

To find the power in the circuit, we would use the following formula;

Power = I²R

Where;

  • I is current measured in Amperes.
  • R is resistance measured in Ohms.

Power = 12² * 100

Power = 144 * 100

<em>Power = 144,000 Watts</em>

4 0
3 years ago
2) A car going down the road has a velocity of 20 m/s. If the car continues at this
Artemon [7]

Answer: 140

Explanation: just multiply 7 x 20

5 0
3 years ago
Read 2 more answers
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