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mihalych1998 [28]
4 years ago
14

3. The nervous system works together to communicate with different parts of the body and with the external environment. Spinal c

ord damage can affect the whole system because the spinal cord __________. A. controls the actions of the brain and peripheral nerves B. is the most important organ in the nervous system C. mediates communication from the brain to the rest of the body D. is primarily involved in communication with the external environment
Physics
2 answers:
Scorpion4ik [409]4 years ago
8 0
I don’t know I just need points
Likurg_2 [28]4 years ago
7 0

Answer:

C. mediates communication from the brain to the rest of the body

Explanation:

The brain and spinal cord are your body's central nervous system. The brain is the command center for your body, and the spinal cord is the pathway for messages sent by the brain to the body and from the body to the brain.

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Answer:

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Explanation:

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If the current through a 20-Ω resistor is 8.0 A , how much energy is dissipated by the resistor in 1.0 h ? Express your answer w
marshall27 [118]

Answer:

P(3600)=593.247W

Explanation:

First, let's find the voltage through the resistor using ohm's law:

V=IR=20*8=160V

AC power as function of time can be calculated as:

P(t)= V*I*cos(\phi)-V*I*cos(2 \omega t-\phi)  (1)

Where:

\phi=Phase\hspace{3}angle\\\omega= Angular\hspace{3}frequency

Because of the problem doesn't give us additional information, let's assume:

\phi=0\\\omega=2 \pi f=2*\pi *(60)=120\pi

Evaluating the equation (1) in t=3600 (Because 1h equal to 3600s):

P(3600)=160*8*cos(0)-160*8*cos(2*120\pi*3600-0)\\P(3600)=1280-1280*cos(2714336.053)\\P(3600)=1280-1280*0.5365255751\\P(3600)=1280-686.7527361=593.2472639\approx=593.247W

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4 years ago
If a person can run 10 km in 2 hours, what is the person's speed? Include your work with your answer.
Pachacha [2.7K]
<span>Buddy, remember one formula.. speed=distance/time your all problems will be solved. in this case the answer is 5 km per hr</span>
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3 years ago
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