<span>Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record</span>
Answer:
1) joule
2) ![kgm^{2}/s^{2}](https://tex.z-dn.net/?f=kgm%5E%7B2%7D%2Fs%5E%7B2%7D)
3) ![10\%](https://tex.z-dn.net/?f=10%5C%25)
Explanation:
1) Luminosity is the <u>amount of light emitted</u> (measured in Joule) by an object in a unit of<u> time</u> (measured in seconds). Hence in SI units luminosity is expressed as joules per second (
), which is equal to Watts (
).
This amount of light emitted is also called radiated electromagnetic power, and when this is measured in relation with time, the result is also called radiant power emitted by a light-emitting object.
Therefore, if we want to calculate luminosity the Joule as a unit will be used.
2) Work
is expressed as force
multiplied by the distane
:
Where force has units of
and distance units of
.
If we input the units we will have:
This is 1Joule (
) in the SI system, which is also equal to ![1 Nm](https://tex.z-dn.net/?f=1%20Nm)
3) The formula to calculate the percent error is:
![\% error=\frac{|V_{exp}-V_{acc}|}{V_{acc}} 100\%](https://tex.z-dn.net/?f=%5C%25%20error%3D%5Cfrac%7B%7CV_%7Bexp%7D-V_%7Bacc%7D%7C%7D%7BV_%7Bacc%7D%7D%20100%5C%25)
Where:
is the experimental value
is the accepted value
![\% error=\frac{|7.34 (10)^{-11} Nm^{2}/kg^{2}-6.67 (10)^{-11} Nm^{2}/kg^{2}|}{6.67 (10)^{-11} Nm^{2}/kg^{2}} 100\%](https://tex.z-dn.net/?f=%5C%25%20error%3D%5Cfrac%7B%7C7.34%20%2810%29%5E%7B-11%7D%20Nm%5E%7B2%7D%2Fkg%5E%7B2%7D-6.67%20%2810%29%5E%7B-11%7D%20Nm%5E%7B2%7D%2Fkg%5E%7B2%7D%7C%7D%7B6.67%20%2810%29%5E%7B-11%7D%20Nm%5E%7B2%7D%2Fkg%5E%7B2%7D%7D%20100%5C%25)
This is the percent error
Answer:
"caffeine" both products contain this compound
Answer:
V(c)' = 0.325 m/s
V(a)' = 2.19375 m/s
V(b)'' = 0.73125
Explanation:
See attachment for explanation.
Answer:
E) The centripetal force is always perpendicular to the velocity.
Explanation:
Due to gravity and inertia, the satellite follows a uniform circular motion. In this movement, the velocity is always tangent to the orbit and the centripetal force is directed towards the center. Therefore, there is no net acceleration in the same direction of velocity, which implies that it remains constant.