Nuclear fission experiments show that the neutrons the uranium nuclei into two fragment
of about the same size. This process is accompanied by the emission of several:
In Millikan s experiment oil drops are used to measure the elementary charge e. Which statement about the behaviour of the oil drops during the experiment is correct
A body of mass 5 kg is moving with a momentum of 10 kg m/s.A force of 0.2 N acts on it in the direction of motion of the body for 10 seconds.The increase in its kinetic energy is
A lift is moving downwards at a very high constant speed. A passenger present inside the lift standing on a weighing machine would notice that his weight
A whistle is revolved with high speed in a horizontal circle of radius R. to an observer at the centre of the circle the frequency of the whistle will appear to be:
A rubber cord 100 cm long is elongated 1 cm by a stretching force of 0.2 N. The cross-sectional area of the cord is 0.04 cm2. Find the Young's modulus for that rubber.
An excess af silver nitrate is added to the aqueous barium chloride and the precipitate is removed by filtration. What are the main ions in the filtrate?
Intermolecular forces exist between molecules of group 7 elements which of the following sequence represents the strength of the intermolecular forces?
John hogg separated blue green algae and bacteria (prokaryotes) form nucleated protists and placed them in a separate group called Monera, within the kingdom.
In a revolutionary development in technology, several manufacturers now make biodegradable forms of plastic; some plastic six. Pack rings, for example, gradually _______ when exposed to sunlight
It is characteristic of the Metropolitan Opera as of every major international company that the casting is based more on the availability of singers as it is on the tastes of the music director and the public
Because Pasha stubbornly continued to believe in the, power of Vitamin C to cure cancer despite much evidence to the contrary, his colleagues felt he had lost is scientific ______
Like their counterparts in other countries the student movement in the united states in the 1960 was a powerful one and probably helped to bring the war in Vietnam to an end
Jockeys at most racetracks become familiar with the horses by riding them in early morning workouts which keeps both the jockeys and the horses in good condition
