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MA_775_DIABLO [31]
3 years ago
6

People watching their team lose important games often make faces, yell at the screen, and demonstrate general agitation. Althoug

h they aren't playing the game themselves, they may be able to experience the frustration felt by the players because of ________________ activity in the brain
Physics
1 answer:
Phantasy [73]3 years ago
6 0
The premotor cortex of the brain is responsible for this type of behavior.  Mirror neurons are activated during these times. The mirror neuron situated in the premotor cortex copies the behaviors or feelings observed, therefore, people watching exhibit the same behavior and feelings as the player itself when they lose a game.
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Which of the following can be used as a measure of an object's inertia?
Leokris [45]

Answer:

a

Explanation:

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3 years ago
What's the definition of sound?
Temka [501]
<span>vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.</span>
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4 years ago
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A microwave oven operating at 1.22 × 108 nm is used to heat 165 mL of water (roughly the volume of a teacup) from 23.0°C to 100.
ANTONII [103]

<u>Answer:</u> The number of photons are 3.7\times 10^8

<u>Explanation:</u>

We are given:

Wavelength of microwave = 1.22\times 10^8nm=0.122m    (Conversion factor:  1m=10^9nm  )

  • To calculate the energy of one photon, we use Planck's equation, which is:

E=\frac{hc}{\lambda}

where,

h = Planck's constant = 6.625\times 10^{-34}J.s

c = speed of light = 3\times 10^8m/s

\lambda = wavelength = 0.122 m

Putting values in above equation, we get:

E=\frac{6.625\times 10^{-34}J.s\times 3\times 10^8m/s}{0.122m}\\\\E=1.63\times 10^{-24}J

Now, calculating the energy of the photon with 88.3 % efficiency, we get:

E=1.63\times 10^{-24}\times \frac{88.3}{100}=1.44\times 10^{-24}J

  • To calculate the mass of water, we use the equation:

Density=\frac{Mass}{Volume}

Density of water = 1 g/mL

Volume of water = 165 mL

Putting values in above equation, we get:

1g/mL=\frac{\text{Mass of water}}{165mL}\\\\\text{Mass of water}=165g

  • To calculate the amount of energy of photons to raise the temperature from 23°C to 100°C, we use the equation:

q=mc\Delta T

where,

m = mass of water = 165 g

c = specific heat capacity of water = 4.184 J/g.°C

\Delta T = change in temperature = T_2-T_1=100^oC-23^oC=77^oC

Putting values in above equation, we get:

q=165g\times 4.184J/g.^oC\times 77^oC\\\\q=53157.72J

This energy is the amount of energy for 'n' number of photons.

  • To calculate the number of photons, we divide the total energy by energy of one photon, we get:

n=\frac{q}{E}

q = 53127.72 J

E = 1.44\times 10^{-24}J

Putting values in above equation, we get:

n=\frac{53157.72J}{1.44\times 10^{-24}J}=3.7\times 10^{28}

Hence, the number of photons are 3.7\times 10^8

4 0
4 years ago
The period of the musical node E0 is 4.85 × 10-2 seconds. What is the frequency of this note?
ladessa [460]

Here's an interesting fact to remember:                  (Period of any wave) x (Frequency of the wave)  =  1 .If you can memorize that, then you'll always remember that                       Period  =  1 / frequencyand                 Frequency  =  1 / period. The second one is what you need for this problem.                 Frequency  =  1 / period                                      = 1 / (4.85 x 10⁻² second)                                     = 1 / (0.0485 second)                                     =20.62 / second  

=20.62 Hz.  (rounded) 

Explanation:(Plato) I just took the test

5 0
2 years ago
CAN YOU HELP ME IN THE FOLLOWING EQUATION THE SPEED IS V = A + BT. DETERMINE THE DIMENSIONS OF A AND B
Arturiano [62]

Answer:

A = [m/s]

B = [m/s²]

Explanation:

Assuming that V has SI units of m/s, then A and BT must also have units of m/s.

A = [m/s]

BT = [m/s]

Since T has SI units of s:

B [s] = [m/s]

B = [m/s²]

4 0
3 years ago
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