Subject: Physics, asked on 5/4/14

## 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.

Subject: Physics, asked on 31/10/20

## The potential difference across the 3 ohm resistor in the following diagram is Subject: Physics, asked on 3/10/20

## why seven colours combine to give almost white but not perfectly white colour?

Subject: Physics, asked on 8/2/15

## 1-Show by equations, the effect on the proton number Z and mass number Aof the parent nucleus brought about by the two types of radioactive decay. 2-State one industrial use of  α, β, and γ radiation.

Subject: Physics, asked on 23/2/12

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

Subject: Physics, asked on 19/4/13

## 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.

Subject: Physics, asked on 15/2/18

## Q Two liquids A and B have specific heat capacities 2.5 J/g $°$${C}^{-1}$ and 3.2 J/g $°$C respectively.  (i) Which liquid is a good conductor of heat? Why?  (ii) Which liquid is more suitable as a liquid in radiators for cooling?  Q.  A calorimeter of mass 60 g contains 180 g of water at 29$°$C. Find the final temperature of the mixture, when 37.2 g of ice at —10$°$C is added to it (specific heat capacity of water = 4200 J/kg K, latent heat of ice = 336 x ${10}^{3}$ J/kg, specific heat capacity of ice = 2100 J/kg K, specific heat capacity of the calorimeter is 0.42 J/g$°$${C}^{-1}$ ).  Q. What are background radiations?  Q. Write an equation of an a emission from ${U}_{92}^{238}$?

Subject: Physics, asked on 3/6/20

## A uniform half metre rule can be balanced at the 29.0 cm mark when a mass 20g is hung from its one end .Find the mass of the half metre rule.

Subject: Physics, asked on 15/12/13

## 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?

Subject: Physics, asked on 5/4/14

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

Subject: Physics, asked on 11/2/18

## A metal ball of mass 60g falls on a concrete floor from a vertical height of 2.8m and rebounds to a height of 1.3m . find the change in kinetic energy in SI units.

Subject: Physics, asked on 10/1/18

## How to do this? 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  at the ends.

Subject: Physics, asked on 29/10/20

## An electric bulb draws a current of 0.8A and works on 250 V on an average of 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?

Subject: Physics, asked on 7/8/19

## On which surface of the prisim there is both dispersion anddeviation and on which surface there is only deviation

Subject: Physics, asked on 12/6/12

## a free pith ball of 8g carries a positive charge of 5*10-8c. 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?

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