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ira [324]
2 years ago
6

Làm thế mào để kiểm tra một lục ma sát trược

Physics
1 answer:
9966 [12]2 years ago
4 0
C I completed the same quiz
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4. A plane accelerates down a runway due to the constant resultant force of
Doss [256]

Answer:

See below

Explanation:

Net force acting on the plane after overcoming frictional forces is

2.7 x 10^6   -  6.8 x 10^4   -  8.5 x 10^5 = 1 782 000 N

Work = F x d

        = 1 782 000 x 1400 m = 2.5 x 10^9   J       or  2.5 x 10^6  kJ

4 0
1 year ago
Manganese-52 has a half-life of 6 days. How many days would a scientist have to wait for the radioactivity to be 12.5% the start
sineoko [7]

Answer:

Let N = N0 where N0 is the number of atoms originally present.

In 6 days    N = N0 / 2

In 12 days   N = N0 / 4

In 18 days   N = N0 / 8    = .125 N0

So it would take 18 days.

4 0
3 years ago
Read 2 more answers
Use the equation d=m/v. If a rock has a density of 2g/cm^3 and a volume of 8cm^3, what is the mass?
Ray Of Light [21]

Answer:

The mass is 16 [g]

Explanation:

We have to remember the formula that defines density, which mentions that the density is equal to mass divided by the volume.

Density = mass / volume\\where:\\density = 2[\frac{g}{cm^{3} } ]\\Volume = 8 [cm^{3}]

Now we clear the mass:

mass= density*volume\\mass = 2[\frac{g}{cm^{3} }]*8[cm^{3} ]\\mass = 16 [g]

8 0
3 years ago
Which of the following is not sublimable? *
galina1969 [7]

Answer:

where is your option ?

you can't write option so I think

sodium chloride is not sublimable

7 0
3 years ago
Which of the following best defines the science of separating color wavelengths?
Mice21 [21]
Answer: spectroscopy

Spectroscopy is the separation of the light in the different wavelengths and spectrophotometry measures the intensities of the different components of the light to get the composition of substances.
3 0
3 years ago
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