When a force is applied to an object and the object moves in the direction of the force, work is done. Which of the following is a correct expression of work in English? A. Force multiplied by distance. B. Force divided by distance. C. Distance multiplied by time. D. Distance divided...
A. The object's shape always changes. B. The object's mass always increases. C. The object always moves in the direction of the force. D. The object's speed or direction of movement may change. 相关知识点: 试题来源: 解析 D。本题考查力的作用效果。选项 A 力作用于物体时,物体的形状...
14 (a) A force is applied across the ends of a sample of wire. For small forces the deformation of the wire is elastic and for large forces the deformation is plastic.Explain what is meant by the terms(3)elastic deformation plastic deformation(b)Copper is a ductile material. This mak...
[translate] aRegistration option 注册选择[translate] ain 10 years 在10年[translate] athe force is referred to one applied to the directly to the rod (push). 力量提到一个被申请于直接地到标尺(推挤)。[translate]
13 A constant force F is applied to a stationary object of mass m on a frictionless surface. A constant acceleration increases the velocity of the object to some value v in a time t. It covers a distance s during this time.Which value of the kinetic energy is given to the object? C...
an attacker will have a more difficult time logging in as the true administrator. Of course, the obvious problem with using Group Policy for this operation is that the renamed Administrator account will have the same name on every computer to which this Group Policy object was applied. That le...
friction is a force exerted by a surface against the motion of a body across its surface. friction is the reason why your car comes to a standstill if you don’t press the accelerator. the frictional force is opposing the rotation of the wheels of your car. therefore, if you leave the...
aThe electric force is a constant value applied for 90% of the stroke, but not at the turning points when piston speed is low. An estimation of the friction force can be deduced from the friction mean effective pressure, fmep. 当活塞速度是低的时,电力是90%申请恒定的价值冲程,但不在转折点...
If you place an solid object on a fluid, is the force it applies to the fluid equal to the buoyant force? I would have thought that it applies a force equal to its own weight but that would mean that the force applied to the object by the fluid, the buoyant force, ...
A petition asks the court to provide a court order, while a complaint seeks damages or to force the defendant to start or stop doing something. How a Petition Works When a petition is filed, the plaintiff and the defendant are given the opportunity to settle the case privately or to use ...