Displacement and velocity are vector quantities. A vector quantity has both magnitude and direction.Vector quantities may be combined by vector addition to find their resultant.II Acceleration is equal to the rate of change of velocity.Acceleration is a vector quantity.The gradient of a velocity-...
China's central government-administered state-owned enterprises (SOEs) have a promising future in boosting mass entrepreneurship and innovation, Premier Li Keqiang said Friday. China criticizes U.S. report on religious freedom China on Friday criticized a U.S. organization's report on religious freed...
The sky-diver and his equipment have a total mass of 90 kg.Determine the total resistive force acting on the sky-diver at that point. {2] 相关知识点: 试题来源: 解析 (a)(i)air resistance is zero/negligle. or. welght gravitational force is only force Or. resultan force is the ...
A person of mass 49.5 kg stands at rest. How much will the average force exerted on the feet by the floor differ from the person's weight during a 0.225 s interval in which the blood's upward component of momentum increase...
How does Newton's second law of motion show the relationship (increase or decrease) between gravitational force, mass, and free-falling acceleration in a free-falling object (negligible of air resistance and the drag force being air)? If t...
A spring that is stretched acquires a potential energy and increases its mass. Binding energy among nuclei and quarks makes also the mass of neutrons and protons (99% of the mass is binding energy due to the strong force). After all potential energy is also said to be 'stored energy', ...
The derivations were done for a two-wire system where the displacement of the two wires was symmetric about their common mass center. The way the liquid bridge is sketched in Fig. 7, there will be no direct capillary force between wires that are not closest neighbors, since the liquid bridg...
The Earth's atmosphere plays a role in the process. The air slows the object's fall due to air resistance (essentially the force of all the air molecules hitting it as it falls), and this force increases the faster the object falls. This continues until it reaches a point called terminal...
The momentum of the object gives an idea about the mass and velocity of the object. If the external force on the system is zero, then the momentum of the system remains conserved. The conservation means that the initial momentum of the system is equal to the final ...
This double pull, towards rematerialisation and dematerialisation, is constitutive of a vital neo-materialist ontology and is crucial to the logistics of perception and actualisation of the virtual (Massumi 2002). It is an internal vacillation or swing, that need not be resolved but must be ac...