Physics: A certain strain of bacteria doubles in number each 20 days. Two of these bacteria are placed ona spaceship and sent away from the Earth for 1000 Earth-days. During this time, the speed of theship is 0.9950c. How many bacteria are aboard when the ship lands on the Earth

A certain strain of bacteria doubles in number

Ответ:

markuswalter1043

27.01.2022

Physics

Explanation:

We shall apply time dilution relation of relativity

t = $\frac{t_0}{\sqrt{1-\frac{v^2}{c^2} } }$

$1000 = \frac{t_0}{\sqrt{1-\frac{v^2}{c^2} } }$

$1000 = \frac{t_0}{\sqrt{1-\frac{0.995^2}{1} } }$

t₀ = 1000 x .09987

= 99.87 days .

doubling time = 20 days

no of doubling time in 20 days ; n = 99.87 / 20

n = 4.9935

n = $n_0\times 2^n$ ; n₀ is initial number , n is number finally .

= 2 x 2⁴°⁹⁹³⁵

= 64 approx .

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Ответ:

mcdonaldmacy01

22.03.2023

Physics

Momentum is equal to the Mass*Velocity
Mass=625 kg
Velocity=? m/s
Momentum=13,200 kg*m/s

Momentum is p
Mass is m
Velocity is v
p=mv

13,200=625v
divide both sides by 625

v=21.12 m/s

If you have any questions, feel free to ask. Hope this helps

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A certain strain of bacteria doubles in number each 20 days. Two of these bacteria are placed on
a spaceship and sent away from the Earth for 1000 Earth-days. During this time, the speed of the
ship is 0.9950c. How many bacteria are aboard when the ship lands on the Earth

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