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sineoko [7]
3 years ago
5

What relationship exists betwen air resistance and acceleration of falling objects

Physics
2 answers:
ololo11 [35]3 years ago
5 0
They both make a thing go faster and slower but the relationship is force.
Katen [24]3 years ago
4 0
They are both forces that exist when an object is falling. Terminal velocity occurs when gravitational acceleration is equivalent to air resistance. :)
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A television of mass 13 kg sits on a shelf. What is the normal force acting on the television?
Mnenie [13.5K]

13 \times 9.8 = 127.4
B is the correct answer
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sweet-ann [11.9K]

Answer:

129.2 C

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Explanation:

n = Number density = 8.46\times 10^{28}\ electrons/m^3

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t = Time taken = 0.76 s

d = Diameter = 6 mm

Charge is given by

q=it\\\Rightarrow q=170\times 0.76\\\Rightarrow q=129.2\ C

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Drift velocity is given by

v_d=\dfrac{J}{ne}\\\Rightarrow v_d=\dfrac{6012520.07236}{8.46\times 10^{28}\times 1.6\times 10^{-19}}\\\Rightarrow v_d=0.000444187357592\ m/s

Distance traveled

s=v_dt\\\Rightarrow s=0.000444187357592\times 0.76\\\Rightarrow s=0.00033758239177\ m=0.33758239177\ mm

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3 years ago
Determine the mass of the object below to the correct degree of precision.
Vika [28.1K]

Answer:

The correct degree of precision is 272.94 g.

Explanation:

Precision : It is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 2.7 kg each time. Then the measurement is said to be precise.

Level of precision is determined by the maximum number of decimal places.

In the given figure, the value of mass of object is 280 g. From the given options we conclude that the 272.94 g is more close to 280 g and has maximum number of decimal places. So, 272.94 g measurement is said to be precise.

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Answer: water cannot be used as barometric liquid because it's density is lower than Mercury . water's density is 1000 gram per cubic meter. hence it requires a barometer whose height is around 11 meters.

Explanation:

Sorry if that dont make sense im not really good at math

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