两颗人造卫星A\B绕地球做圆周运动2、两颗人造卫星A、B绕地球做圆周运动,周期之比为TA :TB = 1:8,则轨道半径之比和运动速率之比分别为( )A.RA :RB = 4:1; VA :VB = 1:2 B.RA :RB = 4:1; VA :VB = 2:1C.RA :RB =
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![两颗人造卫星A\B绕地球做圆周运动2、两颗人造卫星A、B绕地球做圆周运动,周期之比为TA :TB = 1:8,则轨道半径之比和运动速率之比分别为( )A.RA :RB = 4:1; VA :VB = 1:2 B.RA :RB = 4:1; VA :VB = 2:1C.RA :RB =](/uploads/image/z/2644009-25-9.jpg?t=%E4%B8%A4%E9%A2%97%E4%BA%BA%E9%80%A0%E5%8D%AB%E6%98%9FA%5CB%E7%BB%95%E5%9C%B0%E7%90%83%E5%81%9A%E5%9C%86%E5%91%A8%E8%BF%90%E5%8A%A82%E3%80%81%E4%B8%A4%E9%A2%97%E4%BA%BA%E9%80%A0%E5%8D%AB%E6%98%9FA%E3%80%81B%E7%BB%95%E5%9C%B0%E7%90%83%E5%81%9A%E5%9C%86%E5%91%A8%E8%BF%90%E5%8A%A8%2C%E5%91%A8%E6%9C%9F%E4%B9%8B%E6%AF%94%E4%B8%BATA+%3ATB+%3D+1%3A8%2C%E5%88%99%E8%BD%A8%E9%81%93%E5%8D%8A%E5%BE%84%E4%B9%8B%E6%AF%94%E5%92%8C%E8%BF%90%E5%8A%A8%E9%80%9F%E7%8E%87%E4%B9%8B%E6%AF%94%E5%88%86%E5%88%AB%E4%B8%BA%EF%BC%88+%EF%BC%89A.RA+%3ARB+%3D+4%3A1%3B+VA+%3AVB+%3D+1%3A2+B.RA+%3ARB+%3D+4%3A1%3B+VA+%3AVB+%3D+2%3A1C.RA+%3ARB+%3D)
两颗人造卫星A\B绕地球做圆周运动2、两颗人造卫星A、B绕地球做圆周运动,周期之比为TA :TB = 1:8,则轨道半径之比和运动速率之比分别为( )A.RA :RB = 4:1; VA :VB = 1:2 B.RA :RB = 4:1; VA :VB = 2:1C.RA :RB =
两颗人造卫星A\B绕地球做圆周运动
2、两颗人造卫星A、B绕地球做圆周运动,周期之比为TA :TB = 1:8,则轨道半径之比和运动速率之比分别为( )
A.RA :RB = 4:1; VA :VB = 1:2 B.RA :RB = 4:1; VA :VB = 2:1
C.RA :RB = 1:4; VA :VB = 1:2 D.RA :RB = 1:4; VA :VB = 2:1
两颗人造卫星A\B绕地球做圆周运动2、两颗人造卫星A、B绕地球做圆周运动,周期之比为TA :TB = 1:8,则轨道半径之比和运动速率之比分别为( )A.RA :RB = 4:1; VA :VB = 1:2 B.RA :RB = 4:1; VA :VB = 2:1C.RA :RB =
根据开普勒第三定律R^3/T^2=K
所以RA:RB=1:4
又因为V=ωR
ω=2π/T
所以VA:VB=2:1
所以选D