Here the absolute uncertainty is not given, so assume the last reported digit can vary by 1. That means the absolute uncertainty is 0.1 × 10^4 cm.
Now, when you perform math operations on the measurements, you have to adjust the absolute uncertainty of the final result. In particular:
1. If you multiply the measurement by some number "n" (which has zero uncertainty), then you must also multiply the uncertainty by "n".
2. If you square the measurement, then you must multiply the uncertainty by 2M (where "M" is the amount of the measurement)
3. And lastly, if you cube the measurement, you must multiply the uncertainty by 3M²So, if the measured radius is "R" (1.8x10^4 cm); and the uncertainty is "Δ" (0.1 × 10^4 cm), then the area is:
Area = πR² +/- π(2R)Δ
(Notice I multiplied the Δ by π (according to Rule 1 above) and then by (2R) (according to Rule 2) above.)
Relative uncertainty = absolute uncertainty / measured value, so:
Relative uncertainty in area = π(2R)Δ / (πR²)
= 2Δ/R
= 0.2 × 10^4 cm / (1.8 times; 10^4 cm)
(which is about 11%)
Answer:
A because that is pretty much the description of the asthenosphere
There would be fewer days, less animals, less ways to survive, the ozone layer would expand, and pollution would take over.
Answer:
The astenosphere is located below the lithosphere
The mantle is composed of silicate material
Explanation:
The Earth has several different layers, and they can be presented in two different manners, depending on their chemical composition and their physical properties. According to the chemical composition the Earth has three layers, crust, mantle, and core, while in accordance to the physical properties it has five, lithosphere, astenosphere, mesosphere, outer core, and inner core.
The astenosphere is the second layer from the top, and it lies just below the lithosphere. It is also the upper part of the mantle. The mantle is a layer that is largely composed of silicate material, mostly silicate molten rock. It can easily be seen from the volcanic activities that this layer is composed of silicate material because the magma is rich in it, and the magma comes from this layer.
Answer:
Population pyramid is used to show the changes taking place in demography of country.
Explanation:
- The population pyramid shows the demographic structure of a community. Births, deaths, and migration are three important components of population change that alter the trends in the population composition of a place.
- The main economic reason why the people under the age group of 50 are less likely to migrate to the community is due to they have good earnings and better standards of living.
- One social factor that can attract the migrants that are over the age of 65 is social linkages and cultural ties. The population of females that is vier 80 years of age is more in numbers due to they have better health conditions.
- The population pyramid can be used to show social welfare as it harnesses human capital over time.
