Physics - Classical PhysicsWe show that attempts to modify the force on a magnetic dipole by introducing either hidden momentum or internal forces are not correct. The standard textbook result ${\\\bf F=abla(\\\bmu\\\cdot B)}$ is correct even in the presence of time dependent electromagne...
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.
结果1 题目What is the force of a magnet called? A. electric field B. gravitational field C. magnetic field D. thermal field 相关知识点: 试题来源: 解析 C。解析:“The force of a magnet is called a magnetic field.”。 反馈 收藏
C. Magnetic force. D. Frictional force. 相关知识点: 试题来源: 解析 B。解析:文章中提到“When an object is placed in water, it experiences an upward force called buoyant force. If the buoyant force is greater than the weight of the object, the object will float.”,所以使物体漂浮的力是...
How is it determined? What is a normal force? How is it determined? What is the meaning of force in physics? Give real-life examples. What is the dimensional formula of force? What is the dimensional formula of the force? What is the force of magnetic force? What are the four forces...
Action-at-a-distance forcesinclude: gravitation, electrostatic and magnetic forces. Measuring Force: Force is measured using either the English System of Measurements or theInternational System of Units (SI). Common Units of Force --->>SI: Newton (N) 1 N = 0.225 lb; ...
What is Magnetomotive Force (MMF) - The Magnetomotive force (MMF) is defined as the work done in moving a unit magnetic pole once around the magnetic circuit. It is a magnetic pressure that tends to set up magnetic flux in a magnetic circuit. Mathematica
What is the force that pulls objects towards the earth? A. Magnetic force B. Gravitational force C. Electrical force D. Frictional force 相关知识点: 试题来源: 解析 B。A 选项磁力有特定的磁性物体才会产生吸引力;C 选项电力是与电荷相关的力;D 选项摩擦力是阻碍物体相对运动的力。而重力是地球对...
What is the name of the force that pulls objects towards the Earth? A. Magnetic force B. Electric force C. Gravitational force D. Frictional force 相关知识点: 试题来源: 解析 C。解析:使物体向地球下落的力是重力。文章中有关于力的介绍。选项 A 磁力不是使物体向地球下落的力。选项 B 电力与...
I actually think one of the most common uses of magnets these days is to take money off people. There are all kinds of health claims about magnets that have never been proved, but people will spend a lot of money trying to reap the benefits from a magnetic force field or something. ...