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Sloan [31]
3 years ago
6

Which of these conclusions is most likely correct about the organisms whose fossils are shown in the diagram?

Geography
1 answer:
gulaghasi [49]3 years ago
4 0
Where is the diagram?
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Anne releases a stone from a height of 2 meters. She measures the kinetic energy of the stone at 9.8 joules at the exact point i
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Eₖ = √1/2 mv²

Eₖ/v² = 1/2 m

2Eₖ/v² = m

mgh = 1/2 mv²

gh = 1/2 v²

2gh = v²

v = √2gh

= √2 × 10 N/kg × 2 m

= 6.324 ms⁻¹

m = 9.8/(6424)²

= 9.8/39.993

= 0.245 g

I am not sure if it's correct.

i transposed for m in the first equation then to find the velocity I combined the potential and kinetic energy equation. there was no mass because velocity doesn't depend on the mass

Then I used earth's gravitational field strength (g) 10 N/kg and the 2 m was the height provided in the question

you can try working and see if you get the same

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What could you do to change the volume of gas?
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Exports during the Qing Dynasty included tea and ____________.
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The 2005 Atlantic hurricane season broke many all-time records, including all but which of the following
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For the game of interstellar baseball, teams have used robotic enhancements to allow superhuman feats. Consider a pitcher who ca
ziro4ka [17]

Answer:

The baseball would seem to be traveling with a velocity 0.98918c of 98.92% of the speed of light as seen from the Earth.

Explanation:

This problem involves the relativistic effects. The pitcher throws the ball with a velocity u​​​​​​​​​​​​' which is 65% of the speed of light c i.e. u' = 0.65c

The velocity V of the spaceship in which he is practicing is 95% of the speed of light. Therefore V = 0.95c

So if the ball is thrown in the same direction as the direction of the spacecraft's motion, then classically, the velocities would add up and exceed the speed of light. But we know that this is not possible. It is prohibited by the special theory of relativity. So we need to consider the relativistic addition of velocities to calculate the velocity (u) of the ball as seen from the Earth.

The formula for relativistic addition of velocities is expressed below,

u=\frac{V+u'}{1+\frac{Vu'}{c^2}}

We know that u' = 0.65c and V = 0.95c. now we can calculate u which is the velocity of the baseball as seen from Earth as follows

u=\frac{0.95c+0.65c}{1+\frac{0.95c\times 0.65c}{c^2}}

u=\frac{1.6c}{1+\frac{0.6175c^2}{c^2}}

u = \frac{1.6c}{1.6175}

u = 0.98918c

So the baseball would seem to be traveling with a velocity 0.98918c of 98.92% of the speed of light as seen from the Earth.

7 0
3 years ago
Read 2 more answers
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