Edwin Hubble discovered that:
1 answer:
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Answer:
t=7.33 s
Explanation:
According to Newton's second law:
because we don't want the box to slide, the acceleration has to be zero.
we know that:
Now having the acceleration, we can use the following formula.
Answer:
The orbital period of the planet would be half that of the earth
Explanation:
From the question we are told that
The mass of star is four times the mass of sun which can be mathematically represented as
Mathematically gravitational potential is given as
Where M is mass one
m is mass two
From this equation we see that the attraction force is directly proportional to the mass of the star
Thus we can say that
The centrifugal force that balances this attraction Force is
Where is the centrifugal acceleration which can be mathematically represented as
and m is the mass
Substituting this into the equation for centrifugal force
substituting into the equation above
Given that the diameter is the same and assuming that the mass is constant
Then
Take square root of both sides
Answer:
capillaries are 5.09 ×
Explanation:
Given data
area = 10.0 cm2
speed = 4.00
average diameter = 10.0 µm
to find out
total cross-sectional area and How many capillaries
solution
we apply here continuity equation
a1× v1 =a2 ×v2
we know v2 /v1 = a1/a2 that is equal 4
so here a1 will be
= 4 × 10
so a1 is 40 cm²
and capillaries are a1/ area
area = /4 × 10 ² ×
capillaries are = 40 × /
/4 × 10 ² ×
capillaries are 5.09 × [tex]10^{7}