A magnetic field exerts a force on particles known as the Lorentz force, according to Georgia State University'sHyperPhysics website. The force acting on an electrically charged particle in a magnetic field depends on the magnitude of the charge, the velocity of the particle, and the strength ...
A. Magnetic force B. Gravitational force C. Electrical force D. Frictional force 相关知识点: 试题来源: 解析 B。解析:球落到地面是因为重力的作用。选项 A 磁力通常作用于磁性物体之间;选项 C 电力作用于带有电荷的物体之间;选项 D 摩擦力是阻碍物体相对运动的力,与球下落无关。反馈...
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...
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...
A magnet will only affect ferromagnetic metals, but they also have a faint effect on paramagnetic ones. When you place them near a magnet, the diamagnetic metals express a weak repulsion force. In essence, only ferromagnetic metals have magnetic properties. ...
The law of conservation of energy tells us that energy can neither be created nor destroyed; it can only be converted from one form to another. These separate forms of energy are not conserved, but the total amount of energy is conserved. If you drop a baseball from your roof, the ball...
The permeability of free space is a special constant that tells us the magnetic permeability in a vacuum or empty space. This dimensionless quantity is generally represented by \mu_{0} (pronounced as mu zero or mu naught). What do you mean by magnetic permeability? Magnetic permeability is a...
Ferrite Magnets possess strong magnetic fields just like other electromagnets, however, they do not require an electrical force to produce an attraction. They can do that on their own. Since ferrite magnets are not as strong as neodymium magnets, we advise that you do not cut them or alter ...
We 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 electromagnetic fields. Using this expressi...
quantum programs.Open-sourceand Python-based, IBM’sQiskitis by far the most widely-usedquantum SDKin the world—useful for executions both on IBM’s fleet of superconducting quantum computers and on systems that use alternative technologies such as ions trapped in magnetic fields or quantum ...