4. A particle P of mass 2m is moving in a straight line with speed u on a smooth horizontal plane. The particle P collides directly with a particle Q, of mass m, which is moving on the plane along the same straight line as P but in the opposite direction to P. Immediately before...
A particle of mass m is moving along the x-axis, and its position vector at time t is given by . The impulse of the net force acting on the particle between and isA.B.C.D.的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业
1. A particle P of mass 2 kg is moving with velocity (3i+ 4j)m s' when it receives an impulse. Immediately after the impulse is applied, P has velocity (2i-3j)m s-'.(a) Find the magnitude of the impulse.(5)(b)Find the angle between the direction of the impulse and the ...
A particle A of unit mass travels horizontally through a viscous medium. When t = 0, the particle is at point O with initial speed u. The resistance on particle A due to the medium is kv2, where v is the velocity of the particle at time t and k is a positive constant.When t=0,...
结果1 题目 A particle, , of mass kg moves under the action of a single force, Newtons. At time , the velocity, ms-1 of is given by ms-1. At time , is at the origin.Work out when . Show all your working. 相关知识点: 试题来源: 解析 N 反馈 收藏 ...
A charged particle (chargeq) is moving in a circle of radiusRwith unifrom speedv. The associated magnetic momentμis given by View Solution A thin uniform ring of radius R carrying charge q and mass m rotates about its axis with angular velocityω. Find the ratio of its magnetic moment ...
结果1 题目 中国大学MOOC: A particle of mass m is exerted with a force. Which of the following forces is not a conservative force?(g, k, C, D and γ are constants, and υ is the speed of particle.) 相关知识点: 试题来源: 解析 F=-γν^2j 反馈 收藏 ...
【题目】Consider a particle of mass m moving in two dimensions between two perfectly reflecting walls which intersect at an angle x at the origin (see Figure). Assume that when the particle is reflected, its speed is unchanged and its angle of incidence equals its angleof reflection. T he ...
A particle of mass m moves in a one-dimensional potential U(x)=A|x|n, where A is a constant. Find the dependence of the period γ on the energy E in terms of n. 相关知识点: 试题来源: 解析 For a harmonic oscillator n=2, and T=2π√km, independent of E, as (3) confirm...
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 of projection at ...