Theaverage density of Earthis 5.515 g/cm3. Because theaverage density of surfacematerial is only around 3.0 g/cm3, we must conclude thatdenser materialsexist within Earth's core.Seismic measurementsshow that the core is divided into two parts, a "solid"inner corewith a radius of ≈1,220 km...
Low average population densities are characteristic of most underdeveloped countries. Low density of population is generally associated with a relatively low percentage of cultivated land. This generally results from poor-quality lands. It may also be due to natural obstacles to cultivation, such as de...
Low average population densities are characteristic of most underdeveloped countries. Low density of population is generally associated with a relatively low percentage of cultivated land. This generally results from poor-quality lands. It may also be due to natural obstacles to cultivation, such as de...
拉讲的地球的八个密度(Theeightdensityoftheearthspoken)Theeightdensityoftheearthspoken:1.firstdensity:thefourbasicelementsare:Earth,water,fire,wind..
When the energy density of the earth-ejected spirally sunward-streaming hadron-lepton-mixed matter jets reach a critical level, the jet head(s) can perforate a cluster of vortex-like holes on the surface of the sun’s photoshere which emerge as sunspots, so, even though the sunspots occur...
We show that the angular momentum J may, under certain conditions, be of the Regge-like type. These results are used to evaluate the mass and average density of the Universe.doi:10.1007/BF00637757A. A. SchmidtH. A. DottoriC. A. Z. Vasconcellos...
(b)(i))The Earth has an atmosphere which consist of a mixture of air. The average density of air is 1.225 kg m3 and the atmospheric pressure is 1.0 x 105 P a at the Earth's surface.Calculate the height of the atmosphere.p = hpg1.0*10^(-1)=11(1.225)(0.81) h = 8321 m8321...
The Earth’s mass is about 5.98 x 1024kg. The Earth has an average density of 5520 kg/m3 (water has a density of 1027 kg/m3). Earth is the densest planet in our Solar System. To escape the Earth’s gravitational pull, an object must reach a velocity of 24,840 miles per hour (...
百度试题 结果1 题目(c) Calculate the average number of people per km2 (population density) in the United Kingdom. 相关知识点: 试题来源: 解析 Average no. of people = Population of United Kingdom /Area of United Kingdom= 反馈 收藏
Based on the detection results, the average depth of the main sliding surface is considered to be 250 m and six faults (F1-F6) were identified, among which the Xiaojiang fault zone (F1) is the main active fault. Meanwhile, it is inferred from the sounding results and drill date that ...