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SashulF [63]
3 years ago
14

Use the formula to approximate the speed of light, given that the energy contained in a 1kg object is 9 X 10^16 J

Mathematics
1 answer:
erica [24]3 years ago
4 0

Answer:

c = 3\times 10^{8}\ m/s

Step-by-step explanation:

According to the theory of mass-energy equivalence:-

Energy=mass\times c^2

Where, c is the speed of the light

Given that, Mass = 1 kg

Energy = 9\times 10^{16}\ J

So, applying in the above equation as:-

Energy=mass\times c^2

9\times 10^{16}\ J=1\ kg\times c^2

Solving, we get that:-

c = 3\times 10^{8}\ m/s

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4 years ago
A car is being tested for reliability on a track by driving at a constant speed for 5 hours straight. So far, the car has travel
yarga [219]

Answer:

speed=88m/k

Step-by-step explanation:

8 0
3 years ago
WILL GIVE BRAINLIEST! NEED HELP! THANK YOU
liubo4ka [24]

Answer:

y= 3/2x-3

Step-by-step explanation:

m= y2-y1/x2-x1

m= -6-(-9)/-4-(-2)

m= 3/2

y= mx+b

y= 3/2x+b

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3 0
3 years ago
Each of six jars contains the same number of candies. Alice moves half of the candies from the first jar to the second jar. Then
Crazy boy [7]

Answer:

The number of candies in the sixth jar is 42.

Step-by-step explanation:

Assume that there are <em>x</em> number of candies in each of the six jars.

⇒ After Alice moves half of the candies from the first jar to the second jar, the number of candies in the second jar is:

\text{Number of candies in the 2nd jar}=x+\fracx}{2}=\frac{3}{2}x

⇒ After Boris moves half of the candies from the second jar to the third jar, the number of candies in the third jar is:

\text{Number of candies in the 3rd jar}=x+\frac{3x}{4}=\frac{7}{4}x

⇒ After Clara moves half of the candies from the third jar to the fourth jar, the number of candies in the fourth jar is:

\text{Number of candies in the 4th jar}=x+\frac{7x}{4}=\frac{15}{8}x

⇒ After Dara moves half of the candies from the fourth jar to the fifth jar, the number of candies in the fifth jar is:

\text{Number of candies in the 5th jar}=x+\frac{15x}{16}=\frac{31}{16}x

⇒ After Ed moves half of the candies from the fifth jar to the sixth jar, the number of candies in the sixth jar is:

\text{Number of candies in the 6th jar}=x+\frac{31x}{32}=\frac{63}{32}x

Now, it is provided that at the end, 30 candies are in the fourth jar.

Compute the value of <em>x</em> as follows:

\text{Number of candies in the 4th jar}=40\\\\\frac{15}{8}x=40\\\\x=\frac{40\times 8}{15}\\\\x=\frac{64}{3}

Compute the number of candies in the sixth jar as follows:

\text{Number of candies in the 6th jar}=\frac{63}{32}x\\

                                                    =\frac{63}{32}\times\frac{64}{3}\\\\=21\times2\\\\=42

Thus, the number of candies in the sixth jar is 42.

8 0
3 years ago
Please help, solve and explain plz i will marl brainliest if you do it
kati45 [8]

Answer:

36 is the answer for the first question

\frac{25}{16} is the answer to the second question

Step-by-step explanation:

if x= -7

f(-7) = (-7^{2}) +2 (-7) +1

if x= \frac{1}{4}

f(\frac{1}{4})= \frac{1}{4 ^{2} } + 2 (\frac{1}{4}) + 1

6 0
3 years ago
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