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Does force of gravity act on dust partic...

Does force of gravity act on dust particles?

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**Step-by-Step Solution:** 1. **Understanding Gravity**: - Gravity is a universal force that acts between any two objects that have mass. It is an attractive force, meaning it pulls objects towards each other. 2. **Mass of Dust Particles**: - Dust particles, although very small, do possess mass. According to the law of gravity, any object with mass will experience a gravitational force. ...
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A particle of mass 1 g and charge 2. 5 xx10^(-4) C is released from rest in an electric field of 1.2 xx 10^4 NC^(-1) (a) Find the electric force and the force of gravity acting on this particle. Can one of these forces be neglected in comparison with the other for approximate analysis? (b) How long will it take for the particle to travel a distance of 40 cm? (c) What will be the speed of the particle after travelling this destance? (d) how much is the work done by electric force on the particle during this period?

Explain about dust particles.

Knowledge Check

  • Assertion : Colloidal solutions are stable and the colloidal particles do not settle down. Reason : Brownian movement counters the force of gravity acting on colloidal particles.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • If g=10ms^(-2) , what is the force of gravity acting on a mass of 1 kg?

    A
    1N
    B
    10N
    C
    `1/10N`
    D
    None of these

  • Dust particles released by comets are continuously acted upon by sun's radiation pressure in radial outward direction. Assuming a dust particle with rho =3.5 xx10^3 kg//m^3 and reflection coefficient 0. for what value of radius r does gravitational force on dust. particle just balance the radiation force on it from sunlight ? (power radiated by sun =4xx10^(26) W , mass of sun =2xx10^(30)kg )

    A
    `0.1 mueta`
    B
    `0.17 mueta`
    C
    `10 mu eta`
    D
    `17 mu eta`

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