Answer:
686 days for sideral period of Mars.
615 days for synodic period of Venus.
Explanation:
The equations we need to use is:
Where P is the sidereal period, S the synodic period and E the Earth's period (365 days) and where the + is used for inferior planes (Venus) and the - for superior ones (Mars).
For the sidereal period of Mars we then have:
And for the synodic period of Venus we then have:
(Commonly for Venus a sidereal period of 225 days is given, which changes this result to 587 days).
Answer:
90 ohms
Explanation:
1/r = 1/180 + 1/180
1/r= 2/180
take the reciprocal of 2/180 which is 180/2 and its 90 ohms
Answer:
<em>she'll be 42.3 years old</em>
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Explanation:
The year she left is 2020
she returns in 2040
the time observed to have passed by on earth is 40 years
she traveled at a speed of 2.5 x 10^8 m/s
From relativity, the astronaut will experience a time dilation and will age more slowly.
the time that is observed to pass on her ship will be gotten from
t' =
where t is the time that is observed to pass by an earthly observer
v is the speed of her ship
c is the speed of light = 3 x 10^8 m/s
v/c = 2.5/3 = 0.83
t' = = 40 x 0.5578 = <em>22.3 years</em> would have passed for her
This means that she'll be 20 + 22.3 = <em>42.3 years old</em>
If you look at the chart you see that there are 6 kids that spend 4-5 hours on the internet out of a total of 15 so it can be put into a fraction like this: 6/15 if you divide this fraction you will get the decimal form: 0.4 multiply this number by 100 and you get the percent: 40%