Answer:
When a cold polar air mass meets a warm tropical air mass they do not mix - they form fronts. The colder air mass is heavier than the warmer air mass, therefore the lighter, warmer air rises over the top of the heavier, colder air. As the warm air is forced to rise it cools.
Explanation:
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Answer:
D. a combination of meat, grains, and vegetables
Explanation:
Answer:
502.51 kg/m^3
Explanation:
Upthrust on object in water is 40 - 20 = 20 N
Upthrust is equal to the buoyancy forces given as
B = pgv
p is density of water 1000 kg/m^3
g = acceleration due to gravity 9.81 m/s^2
v is the volume of liquid displaced.
Therefore
B = 1000 x 9.81 x v
20 = 9810v
v = 2.038x10^-3 m^3
For Upthrust in unknown liquid, we have 40 - 30 = 10 N
Bouyancy force for the liquid will be
B = P x 9.81 x 2.038x10^-3
NB- the same volume of fluid will be displaced i.e 2.038x10^-3 m^3
Equating we have
10 = P x 9.81 x 2.038x10^-3
10 = 0.0199p
p = 10/0.0199 = 502.51 kg/m^3
The lunch counter event at woolworth's in greensboro, north carolina is the foundation of malcolm gladwell´s arguments because through that event, which began with the decision and courage of a few, and with the absolute absence of social networks, which had the necessary patience to expect results, and that other people added to it, he can explain what that nowadays we can come to do, that today we have more and better tools, that can also be added those that are weaker, or that somehow could not participate before, explains that not always more money is equivalent to better, and that if that event In 1960, gave way to a movement for the defense of civil rights, imagine what we could do today, with the new tools of communication.
