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An electric bicycle, e-bike, electrically assisted pedal cycles, or electrically power assisted cycles is a motorized bicycle with an integrated electric motor used to assist propulsion. [2] [3] Many kinds of e-bikes are available worldwide, but they generally fall into two broad categories: bikes that assist the rider's pedal-power (i.e ...
An electric bicycle (or e-bike) is a bicycle that has a small rechargeable electric motor that can give a boost to the pedaling rider or can take over pedaling completely. To qualify as an e- bike in Michigan, the bike must meet the following requirements: It must have a seat or saddle for the rider to sit. There must be fully operational pedals.
The problem for graphs is NP-complete if the edge lengths are assumed integers. The problem for points on the plane is NP-complete with the discretized Euclidean metric and rectilinear metric. The problem is known to be NP-hard with the (non-discretized) Euclidean metric. [3] : . ND22, ND23. Vehicle routing problem.
A sufficient condition for existence and uniqueness of a solution to this problem is that M be symmetric positive-definite. If M is such that LCP(q, M) has a solution for every q, then M is a Q-matrix. If M is such that LCP(q, M) have a unique solution for every q, then M is a P-matrix. Both of these characterizations are sufficient and necessary.
Euler's three-body problem is to describe the motion of a particle under the influence of two centers that attract the particle with central forces that decrease with distance as an inverse-square law, such as Newtonian gravity or Coulomb's law. Examples of Euler's problem include an electron moving in the electric field of two nuclei, such as ...
Avoid Parkinson's bicycle-shed effect. This is an awfully nice bicycle shed, but it's not really that much use without the encyclopedia to go with it. In his 1957 book Parkinson's Law, or the Pursuit of Progress, C. Northcote Parkinson describes a committee that met to discuss the construction of a new nuclear power plant.
Bicycle performance is measurable performance such as energy efficiency that affect how effective a bicycle is. Bicycles are extraordinarily efficient machines; in terms of the amount of energy a person must expend to travel a given distance, cycling is calculated to be the most efficient self-powered means of transportation. [1] The transport ...
n. -body problem. In physics, the n-body problem is the problem of predicting the individual motions of a group of celestial objects interacting with each other gravitationally. [1] Solving this problem has been motivated by the desire to understand the motions of the Sun, Moon, planets, and visible stars.