A particle is projected with speed 15ms^-1 at an angle of 40" above the horizontal from a point on horizontal ground. Calculate the time taken for the particle to hit the ground. 相关知识点: 试题来源: 解析 1.93$$ 0=(15 \sin 40^{\circ})t-gt^{2}/2 \\ t=1.93 $$ ...
8. A particle is projected from a point O with speed u at an angle of elevation a above the horizontal and moves freely under gravity. When the particle has moved a horizontal distance x, its height above O is y.(a) Show that y=xtanα-(gx^2)/(2u^2cos^2α)(4) A girl throw...
The range of the particle is √3. Then the speed of the projected particle is: A√3ms B√4034ms C2√5ms D√28msSubmit A particle is projected from a horizontal plane with a velocity of 8√2ms−1 ms at an angle θ. At highest point its velocity is found to be 8ms−1 Its ...
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The reason is simple. The particle’s velocity inside the potential either exceeds that of the free motion, or is reduced, and τ=x′/v0, where v0 is the speed of free motion. This explanation relies on the existence of a classical trajectory, and can no longer be used in the ...
At time t = 0, a particle of mass m is projected vertically upwards with speed U.The particle is subject to air resistance of magnitude, where v is the speed of the particle at time t and k is a positive constant.Show that the particle reaches its greatest height, H, above the point...
答案 一个粒子投影垂直向上的速度24.5m S-1.找到它的总时间是2100万以上的点的投影 相关推荐 1 大神们我快哭了!帮帮 求求!呜呜呜.. A particle is projected vertically upwards with speed 24.5m s-1 .Find the total time for which it is 21m or more above its point of projection 反馈 收藏 ...
1). Net primary production (NPP) on the other hand is projected to generally increase towards the poles and decrease toward the equator, but with considerable regional variation (Fig. 1). Future warming leads to enhanced ocean stratification, and this process impacts regional phytoplankton ...
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Magnetic fields are fundamental to the evolution of galaxies, playing a key role in the astrophysics of the interstellar medium and star formation. Large-scale ordered magnetic fields have been mapped in the Milky Way and nearby galaxies1,2, but it is no