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...
27. Which of the following effects are possible when a force is applied to an object? A: The mass of the object can change. B: The shape of the object can change. C. The speed of the object can change if it is moving.(1) A and B only(2) A and C only(3) B. and C. onl...
A force of 5, N causes the displacement of an object by 3, m in the direction in which the force acts. How much work has been done on the object? The force moves an object from x = 0 to x = 0.75 m. How much work is done by the force if the o...
When a human exerts force on an object by moving it, where does the force that is applied to the object come from? Explain.Potential EnergyA type of energy known as potential energy is one that an object contains as a result of its locati...
When you head a ball the ball is exerting the same force on your head as your head exerts on the ball. The first law is actually two parts. One deals with bodies at rest and the other deals with bodies in motion. Inertia is the tendency of an object which is at rest to stay at...
Work is done when a force is applied to an object and the object moves in the direction of the force. If a force of 10 newtons moves an object 5 meters, the work done is ___ joules. A. 15 B. 20 C. 50 D. 100 相关知识点: 试题来源: 解析 C。功等于力乘以在力的方向上移动...
3 (a)State the property of an object that experiences a force when the object is placed in:(i) a gravitational field(ii) an electric field.(b) A potential difference of 1.2 × 103V is applied between a pair of horizontal metal plates in a vacuum, as shown in Fig. 3.1.top metal pl...
I m trying to find a way to calculate force on body at any point when a force is applied to that body's end. the other side of body is hinged. The reaction force can be used for finding out force at hinge or joint...How to find out?
On a horizontal surface, an object of mass 5 kg moves with uniform velocity of 2 m/s when a force of 4 N is applied.What is its acceleration when the force is increased to 12 N?试题答案 在线课程 答案:解析: Frictional force f=4 N Resultant force F=ma-f=12-4=8 N Therefore, ...
'Word.Application' is not defined "aspnet_compiler.exe" exited with code 1 "Cannot create ActiveX Component" "Exception from HRESULT: 0x800A03EC" Unable to open excel file "Failed to compare two elements in the array." "Object reference not set to an instance of an object" error which po...