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maksim [4K]
3 years ago
15

Name 3-4 objects you use that depend on the electromagnetic spectrum.

Physics
2 answers:
iVinArrow [24]3 years ago
7 0

Answer:

3 objects that depend on the electromagnetic spectrum would be television, radios, and the Microwave. This is due to the fact that radio waves depend on the electromagnetic spectrum and televisions and radios require radio waves. The microwaves also depend on the electromagnetic spectrum in order to make the Mircowave work

Explanation:

Harman [31]3 years ago
5 0

Things I personally use:

-- my eyes

-- my smartphone

-- my garage door opener

-- my TV;  also the TV remote

-- stove

-- microwave oven

-- toaster

-- night light

-- CD player

-- FM radio

-- car headlights

-- traffic stoplights

-- flashlight

-- telescope

-- binoculars

-- film camera

-- digital camera

-- GPS receiver

-- infrared thermometer

Things I don't personally use but are used by other people:

-- police radios

-- firemen's radios

-- EMT's ambulance radios

-- taxi drivers' radios

-- dentist's X-ray machine

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The flywheel of an engine has moment of inertia 2.50 kg m2 about its rotation axis. What constant torque is required to bring it
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Answer:

Explanation:

From the question we are told that

   The moment of inertia is  I = 2.50 \ kg \cdot m^2

    The final  angular speed is w_f =  400 rev/min  =  \frac{400 * 2\pi}{60}  = 41.89 \ rad/s

     The time taken is  t =  8.0 s

      The initial angular speed is  w_i  =  0\ rad/s

Generally the average angular acceleration is mathematically represented as

        \alpha  =  \frac{w_f - w_i }{t}

=>     \alpha  =  \frac{41.89}{8}

=>      \alpha  = 5.24 \ rad/s^2

Generally the torque is mathematically represented as

   \tau  =  I  *  \alpha

=>    \tau   =  5.24 *  2.50

=>     \tau   =  13.09 \  N \cdot m

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Answer:

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Explanation:

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