The air is less dense at higher elevations, so skydivers reach a high terminal speed. The highest recorded speed for a skydiver was achieved in a jump from a height of 39,000 m. At this elevation, the density of the air is only 4.3% of the surface density. Estimate the terminal speed of a skydiver at this elevation. Suppose that the density of air at sea level is 1.2 kg/m3, the mass of the skydiver is 75kg , and the cross section area of the skydiver is 0.72 m2.
Answers: 2
Physics, 21.06.2019 23:30
Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge
Answers: 1
Physics, 21.06.2019 23:50
The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory
Answers: 2
Physics, 22.06.2019 05:30
Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.
Answers: 1
The air is less dense at higher elevations, so skydivers reach a high terminal speed. The highest re...
Mathematics, 18.05.2021 23:20
Mathematics, 18.05.2021 23:20
Chemistry, 18.05.2021 23:20
English, 18.05.2021 23:20
Mathematics, 18.05.2021 23:20
Chemistry, 18.05.2021 23:20
Mathematics, 18.05.2021 23:20
Mathematics, 18.05.2021 23:20
Law, 18.05.2021 23:20