The meaning of FIELDWORK is a temporary fortification thrown up by an army in the field. How to use fieldwork in a sentence.
Find the work done by the force field \(F(x,y)=x^{2}i+ye^{x}j\) on a particle that moves along the parabola \(x=y^{2}+1\) from \((1,0)\) to \((2,1)\).相关知识点: 试题来源: 解析 Choosing \(y\) as the parameter, the curve \(C\) is parametrized by ...
【题目】Find the work done by the force field F in moving an object from p to o.F(x,y)=e^^(-x) " -xe^(-x) -j; P(0,1), Q(2,0) 相关知识点: 试题来源: 解析 【解析】F(x,y)=e^(-y_i)-xe^(-y) W=∫_c^r⋅|a| Sinceθ/(θ_y)(e^(-y))=-e^(-y)=θ/(...
Find the work done by the force field F(x,y)=x^2-xy in moving a particle along the quarter-circle r(t)=cos t+sin t, 0≤ t≤ π2.相关知识点: 试题来源: 解析 Since x=cos t and y=sin t, we haveF(r(t))=cos ^2t-cos tsin t and r'(t)=-sin t+cos tTherefore the...
【题目】Find the work done by the force fieldF(x,y)=x2i+yej on a particle that moves along the parabola x=y^2+1 from (1,0) to (2,1). 相关知识点: 试题来源: 解析 【解析】Choosing y as the parameter, the curve c is parametrized by x=y2+1,y=y, 0≤y≤1 . T hen(2y,...
【题目】Find the work done by the force fieldF(x,y)=x2i-zyj in moving a particle along the quarter-cirle r(t)=costi+sint j 0≤t≤π/(2) 相关知识点: 试题来源: 解析 【解析】Since x=cost and y=sint, we haveF(r(t) = cos2ti- costsintj and r'(t) = -sinti+ costjT he...
【题目】Find the work done by the force field F(r, y)=ri+(y+2)j in moving an object along an arch of the cycloid r(t)=(t-sint)i+(1-cost)j ,0≤t≤2π . 相关知识点: 试题来源: 解析 【解析】 W=∫_cF⋅dr=∫_0^(2π)(t-sint,3-cost) 2 t-sin t, 3 - cos ...
Find the work done by the force field F(x,y)=x^2 i+xy j on a particle that moves once around the circle x^2+y^2=4 oriented in the counter-clockwise direction.Use a computer algebra system to graph the force field and circle on the same screen. Use the graph to explain ...
Find the work done by the force field in moving a particle along the quarter-circle , . 答案 管线螺3)HO(eFcos 忧近有必,虑远无人=smikah, w电流直项次二F(rdna)=\cはのういて2}t\天九落河银是疑i}-夜三初月九怜可sin5O2Pathhgih}, w电流直项次二\smikahsp电流直}项次二t _dnaF...
Find the work done by the force field F(x,y)=x^2i+ye^xj on a particle that moves along the parabola x=y^2+1 from (1,0) to (2,1). 相关知识点: 试题来源: 解析 Choosing y as the parameter, the curve C is parametrized by x=y^2+1, y=y, 0≤q y≤q 1. ThenW=...