Answer:
Explanation:
We are not told where A and B are, but I'll assume that they are two points on the orbit of earth about the sun.
As that orbit is an ellipse, the two points likely do not have the same distance between the earth and sun.
As gravity varies with the inverse of the square of the distance (F = GMm/d²), the force at the closer distance will be greater than the force at the longer distance.
Answer:
7. (D) uniformly accelerated vertical motion
8. (A) zero
9. (A) zero
10. (C) parabolic
- The complexity of Earth is beyond the capabilities of computer simulations.
- Numerous assumptions that must be made by computer models have a big impact on the forecasts they produce.
- A computer model can incorporate historical climate data, but it is not possible to draw assumptions about future climates using this data in any way.
- A computer model cannot distinguish between anthropogenic climate change and natural climatic fluctuations.
<h3>How precise are temperature forecasts made by climate models?</h3>
The forecasting of global surface temperatures is one of the most significant results of climate models.
Scientists evaluate the effectiveness of their models by contrasting observations of the Earth's climate with predictions of future temperatures and "hindcasts" of past temperatures. Then, by comparing specific climate models and the average of all models to actual warming, scientists may determine whether temperature projections are accurate.
Researchers can have more faith that models can effectively predict future changes in the same factors if they successfully simulate the climate response in the past.
To know more about climate models, visit:
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The speed of electromagnetic waves in a vacuum is the same as the speed of light. It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.
Hope this helps you (:
Answer:
Distance, d = 299.8 meters
Explanation:
Given that,
Speed of light, ![c=2.998\times 10^8\ m/s](https://tex.z-dn.net/?f=c%3D2.998%5Ctimes%2010%5E8%5C%20m%2Fs)
Time, ![t=1\times 10^{-6}\ /s](https://tex.z-dn.net/?f=t%3D1%5Ctimes%2010%5E%7B-6%7D%5C%20%2Fs)
We need to find the distance covered by the light in this time. It can be calculated as :
![d=c\times t](https://tex.z-dn.net/?f=d%3Dc%5Ctimes%20t)
![d=2.998\times 10^8\ m/s\times 10^{-6}\ /s](https://tex.z-dn.net/?f=d%3D2.998%5Ctimes%2010%5E8%5C%20m%2Fs%5Ctimes%2010%5E%7B-6%7D%5C%20%2Fs)
d = 299.8 meters
So, the distance covered by the light is 299.8 meters. Hence, this is the required solution.