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Colt1911 [192]
2 years ago
10

Pls help I need this done asap​

Mathematics
1 answer:
Bezzdna [24]2 years ago
3 0

Would you like me to add them separately or should i add both answer together after?

Step-by-step explanation:

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Using whichever equation you prefer (part a, b, or c), find the speed of light in meters per second if a mass of 3 kilograms con
pav-90 [236]
Given:\\m=3kg\\E=2.7\cdot 10^{17}J\\\\Find:\\c=?\\\\Solution:\\\\E=mc^2\\\\c^2= \frac{E}{m} \\\\c= \sqrt{\frac{E}{m}} \\\\c= \sqrt{ \frac{2.7\cdot 10^{17}J}{3} } = (2.7\cdot 10^{16} \frac{m^2}{s^2} )^{ \frac{1}{2} }=3\cdot 10^{8} \frac{m}{s}
6 0
3 years ago
After traveling exactly half of its journey from station A to station B, a train was held up for 10 minutes. In order to arrive
Alex17521 [72]
Let's define variables:
 s = original speed
 s + 12 = faster speed
 The time for the half of the route is:
 60 / s
 The time for the second half of the route is:
 60 / (s + 12)
 The equation for the time of the trip is:
 60 / s + 60 / (s + 12) + 1/6 = 120 / s
 Where,
 1/6: held up for 10 minutes (in hours).
 Rewriting the equation we have:
 6s (60) + s (s + 12) = 60 * 6 (s + 12)
 360s + s ^ 2 + 12s = 360s + 4320
 s ^ 2 + 12s = 4320
 s ^ 2 + 12s - 4320 = 0
 We factor the equation:
 (s + 72) (s-60) = 0
 We take the positive root so that the problem makes physical sense.
 s = 60 Km / h
 Answer:
 
The original speed of the train before it was held up is:
 
s = 60 Km / h
8 0
3 years ago
Jake asked 25 students in his class how close they live to school .the frecuencia table shows the results
Oliga [24]
That's great so what the question
7 0
3 years ago
Help with this answer please?
puteri [66]
It would be Adjacent/hypotenus which is 36/39 and when simplified the answer is 12/13
3 0
3 years ago
Read 2 more answers
So I copied this off from my teacher she was showing this on the board but I need help showing my work on this so that she doesn
IRISSAK [1]

Answer:

x < 3 or x > 9

Step-by-step explanation:

given 6| x - 6 | + 7 > 25 ( subtract 7 from both sides )

6| x - 6 | > 18 ( divide both sides by 6 )

| x - 6 | > 3

Inequalities of the form | x | > a always have solutions of the form

x < - a OR x > a, hence

x - 6 < - 3 or x - 6 > 3 ( add 6 to both sides in both inequalities )

x < 3 or x > 9


6 0
3 years ago
Read 2 more answers
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