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Irina18 [472]
3 years ago
5

As you travel up into the mountains, you notice discomfort in your ears. This is due to ...

Physics
2 answers:
nydimaria [60]3 years ago
6 0
C.) The low pressure in the mountains
Citrus2011 [14]3 years ago
4 0

Answer: The correct answer is the low pressure in the mountains

Explanation:  

The air pressure is lower in the mountains. As we travel up into the mountains, the air inside our ears takes some time to adjust the pressure change.

This unequal pressure causes discomfort in ears while ascending and descending on the mountain. The condition of discomfort in ear is caused by the pressure difference between the outside and inside the eardrum.

Therefore, as we travel up to into the mountains, we notice discomfort in our ears. This is due to the low pressure in the mountain.

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The weight of the meterstick is:
W=mg=0.20 kg \cdot 9.81 m/s^2 = 1.97 N
and this weight is applied at the center of mass of the meterstick, so at x=0.50 m, therefore at a distance 
d_1 = 0.50 m - 0.40 m=0.10 m
from the pivot.
The torque generated by the weight of the meterstick around the pivot is:
M_w = W d_1 = (1.97 N)(0.10 m)=0.20 Nm

To keep the system in equilibrium, the mass of 0.50 kg must generate an equal torque with opposite direction of rotation, so it must be located at a distance d2 somewhere between x=0 and x=0.40 m. The magnitude of the torque should be the same, 0.20 Nm, and so we have:
(mg) d_2 = 0.20 Nm
from which we find the value of d2:
d_2 =  \frac{0.20 Nm}{mg}= \frac{0.20 Nm}{(0.5 kg)(9.81 m/s^2)}=0.04 m

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