Why does a phonograph record attract dust particles just after it is cleaned?

Why dose a phonograph - record attract dust partiules just . after it is cleaned?

Does force of gravity act on dust particles?

Why does a charged glass rod attract a piece of paper ?

The negatively charged dust particles are attracted by

A particle of mass m collides with another stationary particle of mass M such that the second particle starts moving and the first particle stops just after the collision. Then which of the following conditions must always be valid ?

An infinte wire having linear charge density lambda is arranged as shown in fig. A charge particle of mass m and charge q is released charged q is released from point P. Find the initial acceleration of the particle just after the particle is released.

A particle of mass m strikes a disc of radius R and mass m with a speed u as shown in the figure. What is the speed of the particle just after the collision if the collision is perfectly inelastic ?

A particle of mass m is kept on the top of a smooth sphere of radius LR. It is given a sharp impulse whichimparts it a horizontal speed v. a. find thenormal force between the sphere and the particle just after the impulse. B. What should be the minimum value of v for which the particle does not slip on the sphere? c. Assuming the velocity v to be half the minimum calculated in part, d. find teh angle made by the radius through the particle with the vertical when it leaves the sphere.

Why does fire ul("attract") insects ?