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.

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

Two particles each having a mass of 5 g and charge 10^-7 C stay in limiting equilibrium on a horizontal rough surface with a separation of 10 cm between them. what is the co-efficient of friction of the surface and the particle.

The iron gate of a building is 3m broad. It cn be opened by applying a force of 100N at the middle of the gate. Calculate the least force required to open this gate. Where should the force be applied?

What is the sign convention fot the moment of a force?

a free pith ball of 8g carries a positive charge of 5*10^{-8}c. what must be the nature and magnitude of charge that should be given to a second pith ball fixed 5cm vertically elow the former pith ball so that the upper pith ball is stationary?

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.

of the parent nucleus brought about by the two types of radioactive decay.

2-State one industrial use of α, β, and γ radiation.

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

Two particles each having a mass of 5 g and charge 10^-7 C stay in limiting equilibrium on a horizontal rough surface with a separation of 10 cm between them. what is the co-efficient of friction of the surface and the particle.

(i) Which liquid is a good conductor of heat? Why?

(ii) Which liquid is more suitable as a liquid in radiators for cooling?

Q. A calorimeter of mass 60 g contains 180 g of water at 29$\xb0$C. Find the final temperature of the mixture, when 37.2 g of ice at —10$\xb0$C is added to it (specific heat capacity of water = 4200 J/kg K, latent heat of ice = 336 x ${10}^{3}$ J/kg, specific heat capacity of ice = 2100 J/kg K, specific heat capacity of the calorimeter is 0.42 J/g$\xb0$${C}^{-1}$ ).

Q. What are background radiations?

Q. Write an equation of an a emission from ${U}_{92}^{238}$?

The iron gate of a building is 3m broad. It cn be opened by applying a force of 100N at the middle of the gate. Calculate the least force required to open this gate. Where should the force be applied?

What is the sign convention fot the moment of a force?

Q). In Fig. 1.34, a uniform bar of length l m is supported at its ends and loaded by a weight W kgf at its middle. In equilibrium, find the reactions ${R}_{1}and{R}_{2}$ at the ends.

8hours a day.

a. Find the power consumed by the bulb.

b. If the electric distribution company charges Rs.5 for 6 KWh, what is the

current bill for one month?

a free pith ball of 8g carries a positive charge of 5*10

^{-8}c. what must be the nature and magnitude of charge that should be given to a second pith ball fixed 5cm vertically elow the former pith ball so that the upper pith ball is stationary?