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3 years ago

Explain the scientific meaning of the word random

Physics

1 answer:

Semenov [28]3 years ago

8 0

Explanation:

In general the word random means by chance. The event that occurs unknowingly rather than according to plan is called at its randomness.

But in science, the word random relates with a type of event that is described by its probability distribution.

Also, random means the entropy of the system i.e. it is a thermodynamic quantity that represents the amount of energy in the system that is unavailable for doing work.

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A sample of dna conains 500 adenine bases. how many thymine bases does it contain

enyata [817]

If it contains 500 adenine bases, it contains 500 thymine bases as well, as the DNA pairings are A-T and C-G, there would be an equal amount A as T

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3 years ago

Read 2 more answers

The radius of the earth is 6380 km and the height of mt.everest is 8848 m. if the value of of acceleration due to gravity on the

Bas_tet [7]

a) $9.80 m/s^2$

The acceleration due to gravity at a certain location on Earth is given by

$g=\frac{GM}{(R+h)^2}$

where

G is the gravitational constant

M is the Earth's mass

R is the Earth's radius

h is the altitude above the Earth's surface

At the top of Mt. Everest,

R = 6380 km = $6.38\cdot 10^6 m$

$h' = 8848 m$

$g'=9.77 m/s^2$

With

$g'=\frac{GM}{(R+h')^2}$ (1)

At the Earth's surface,

R = 6380 km = $6.38\cdot 10^6 m$

h = 0

g = ?

$g=\frac{GM}{R^2}$ (2)

By doing the ratio (2)/(1), we find an expression for g in terms of g':

$\frac{g}{g'}=\frac{\frac{GM}{R^2}}{\frac{GM}{(R+h')^2}}=\frac{(R+h')^2}{R^2}=\frac{(6.38\cdot 10^6+8848)^2}{(6.38\cdot 10^6)^2}=1.003$

And therefore,

$g=1.009g'=1.009(9.77)=9.80 m/s^2$

b) 519.3 N

The weight of an object near the Earth's surface is given by

$W=mg$

where

m is the mass of the object

g is the acceleration of gravity at the object's location

In this problem,

m = 50 kg is the mass of the object

g' = 9.77 m/s^2 is the acceleration of gravity on top of Mt Everest

Susbtituting,

$W=(50)(9.77)=519.3 N$

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3 years ago

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Phoenix [80]

You haven't told us what any of those letters represents.

I'm going to assume that ...

-- ' P ' = power

-- ' I ' = circuit current

-- ' V ' = circuit voltage

-- ' E ' = energy

-- ' t ' = time.

Now I'm ready to answer the question that I just invented.

P = I / V

V = P x I

Both of these are false statements, and can't be used to calculate anything.

P = I x V is the correct equation to calculate electrical power.

<em>E = P x t</em> is the correct equation to calculate electrical energy.

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The answer is C.......

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otez555 [7]

Answer: c

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