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...
If a force of 5 N is applied to move an object a distance of 3 meters, what is the work done? A. 2 meters B. 8 N C. 15 joules D. 20 joules 相关知识点: 试题来源: 解析 C。解析:功等于力乘以距离,5N×3m = 15J。A 选项 2 米是距离单位不是功;B 选项 8N 是力的单位不是功...
The force which acts on an object without coming physically in contact with it is called non contact force. Learn about its types i.e. Gravitational Force, Magnetic Force & Electrostatic Force.
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...
A. The spring will not change its shape. B. The spring will remain stretched. C. The spring will return to its original shape. D. The spring will break. 相关知识点: 试题来源: 解析 C。本题考查弹簧的性质。当对弹簧施加力并释放时,弹簧会恢复原状,A 选项弹簧不变形错误;B 选项保持拉伸状态...
Learn about different types of forces - Contact force, non-contact force. Join BYJU'S and explore the world of science in most simple ways.
aFans should request,youn singers sang a folk song.. 风扇应该请求, youn歌手唱了一首民歌。[translate] a获得更大的成功 Obtains a bigger success[translate] abow[translate] a一万五千 15,000[translate] ahave math 有算术[translate] aforce F is applied to a body 力量F被应用于身体[translate]...
A. The object remains at rest. B. The object moves in a random direction. C. The object starts to move. D. The object disappears. 相关知识点: 试题来源: 解析 C。原因:文章中提到 When a force is applied to an object at rest, it starts to move.反馈...
The force applied to an object is related ___ its mass and acceleration. A. to B. with C. on D. at 相关知识点: 试题来源: 解析 A。“be related to”表示“与……有关”。施加在物体上的力与它的质量和加速度有关。反馈 收藏
Force causes acceleration. Newton's Second Law states that: the acceleration (a) of an object is directly proportional to the force (F) applied, and inversely proportional to the object's mass (m). That means that the more force you apply to an object, the greater the acceleration. And,...