A uniform metre scale of mass 80g is to be balanced at the 70 cm marks. Find from where must a mass of 60g be suspended to do so.

A body moving with a constant acceleration travels the distance 3m and 8m respectively in 1s and 2s. Calculate (i) the initial velocity and (ii) the acceleration of the body.

Answer:(i) 2 m/s(ii) 2 m/s^{2}

2 charges,of magnitude 5nC and -2nC are placed at points(2 cm,0,0) (x cm,0,0) in a region of space where there is no external field. If the Electrostatic Potential energy of the system is -0.5μJ,what is the value of x?

Can the moment of force be zero even if force is not zero?If so,when?

product

Given n resistors each of resistance 'R'. How will you combine them to get the (i) maximum (ii) minimum effective resistance? What is the ratio of the maximum to minimum resistance?

A uniform metre scale of mass 80g is to be balanced at the 70 cm marks. Find from where must a mass of 60g be suspended to do so.

using mirrors in ancient times explain in detail. also answer

1-What type of mirrors are used by kings?

2-Which energy is utilized to burn ships in ancient times?

3-explain the phenomenon by drawing ray diagrams .

A body moving with a constant acceleration travels the distance 3m and 8m respectively in 1s and 2s. Calculate (i) the initial velocity and (ii) the acceleration of the body.

Answer:

(i) 2 m/s

(ii) 2 m/s

^{2}2 charges,of magnitude 5nC and -2nC are placed at points(2 cm,0,0) (x cm,0,0) in a region of space where there is no external field. If the Electrostatic Potential energy of the system is -0.5μJ,what is the value of x?

Can the moment of force be zero even if force is not zero?If so,when?