船在水中匀速行驶 受到重力浮力和牵引力和阻力的作用其中A重力对船做功 B浮力对船做功 C牵引力对船做功 D没有力对船做功

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船在水中匀速行驶 受到重力浮力和牵引力和阻力的作用其中A重力对船做功 B浮力对船做功 C牵引力对船做功 D没有力对船做功
船在水中匀速行驶 受到重力浮力和牵引力和阻力的作用其中
A重力对船做功 B浮力对船做功 C牵引力对船做功 D没有力对船做功

船在水中匀速行驶 受到重力浮力和牵引力和阻力的作用其中A重力对船做功 B浮力对船做功 C牵引力对船做功 D没有力对船做功
船在水中匀速行驶 受到重力浮力和牵引力和阻力四个力的作用其中重力浮力垂直船的运动方向,不做功,牵引力做正功,阻力做负功.
C牵引力对船做功 正确.

船在水中匀速行驶 受到重力浮力和牵引力和阻力四个力的作用其中重力浮力垂直船的运动方向,不做功,牵引力做正功,阻力做负功。
C牵引力对船做功 正确。追问谢谢你 利用核能发电的优点是什么 JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ...

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船在水中匀速行驶 受到重力浮力和牵引力和阻力四个力的作用其中重力浮力垂直船的运动方向,不做功,牵引力做正功,阻力做负功。
C牵引力对船做功 正确。追问谢谢你 利用核能发电的优点是什么 JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ

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船在水中匀速行驶 受到重力浮力和牵引力和阻力的作用其中A重力对船做功 B浮力对船做功 C牵引力对船做功 D没有力对船做功 在忽略空气阻力的情况下.水平路面上匀速行驶的汽车,除了受到重力和汽车发动机产生的牵引力汽车受到的力有 假如地球引力减半,在水中航行的船受到的重力和浮力怎么变化 一辆汽车在水平公路上匀速行驶,下列各对力中,属于平衡力的是?A 汽车受到的重力和牵引力 B 汽车受到的重力和支持力C 汽车受到的牵引力和摩擦力 D 汽车受到的支持力和摩擦力为什么不选C? 汽车在平直的公路上匀速行驶时受到平衡力的作用.1.重力和路面的支持力2.牵引力和摩擦阻力第1个,汽车行驶时不是有升力吗,为什么是平衡力呢 汽车在水平公路上匀速直线行驶,下列个对力中是平衡力的是什么 A.汽车受到的牵引力和重力 B.汽车的重力和车B.汽车的重力和车对路面的压力 C.汽车受到的牵引力和路面对车的阻力 D.汽车对 画一画石块和泡沫塑料块在水中受到的浮力和重力的情况 你画一画石块和木块在水中受到的重力和浮力情况? 对在平直公路上匀速行驶的汽车进行受力分析,下列各对力中属于平衡力的是 () A汽车受到的牵引力和汽车受到的重力 B汽车受到的牵引力和汽车受到的阻力 C地面对汽车的支持力和汽车受 匀速行驶的汽车,受到的阻力和它受到牵引力的关系 汽车在水平公路上匀速直线行驶,下列各对力中是平衡力的是(C) A.汽车受到的牵引力和重力 B.汽车的重力和车队路面的压力C.汽车受到的牵引力和路面对车的阻力D.其车队路面的压力和路面 物体在水中受到的浮力与自身的重力和密度有关吗? 汽车和货物的质量为5吨,在水平公路上匀速前进,10秒行驶了150米,若汽车受到的阻力是它重力的0.01倍.则汽车速度是多少?牵引力是多少? 一辆质量为2 ×10^3kg 的汽车,在一条平直的马路上匀速行驶,发动机功率5.4×10^4W,受到的阻力为1800N,速度为多少,5min牵引力和重力的功 一道关于浮力,重力和阻力的物理题.气球在空中受到1000N的浮力匀速上升,加10KG的物体,气球就匀速下降,那么气球受到的重力和气球受到的阻力. 汽车在水平路面受到2400N的水平牵引力,5分中内匀速直线行驶了9000M 受到的阻力和所做的功、功率是多少 潜水艇浸没在水中,在它下潜的过程中,关于它受到的重力和浮力的说法正确的是:A.重力不变,浮力不变; 在一次测试中,汽车在水平路面受到2400N的水平牵引力,5min内匀速直线行驶了9000m求汽车受到水平方向的阻力和汽车牵引力所做的功和功率是多少?