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a satellite of mass m is in orbit around the earth if a second satellite of mass 2m is to be placed in the same orbit the second satellite must have
a girl throws a 01 kilogram ball at a wall the ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces
a car is moving along a straight horizontal road at a speed of 20 meters per second the brakes are applied and a constant force of 5000 newtons
a ball falling vertically from rest for 3 seconds travels very nearlya 147 metersb 294 metersc 441 metersd 882 metersansa ball falling vertically
alpha particles are nuclei ofa hydrogenb heliumc oxygend nitrogenansalpha particles are nuclei of
the idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated bya thompsonb
the half-life of an isotope of an element is 5 days the mass of a 10 gram sample of this isotope remaining after 20 days isa 0312 gramsb 0625 gramsc
normal 0 false false false en-in x-none x-none
an x-ray photon collides with a free electron and the photon is scattered during this collision there is conservation of a momentum but not energyb
when a metal becomes a superconductor there is a tremendous decrease in itsa total volumeb electrical resistancec lengthd densityanswhile a metal
the millikan experiment showed that electric charge wasa negativeb quantizedc positived immeasurableans the millikan experiment showed that electric
indicate the process of heat exchange that does not depend on temperature difference between human skin and enviroment a convection b
the michelson interferometer was designed to study the nature ofa water wavesb sound wavesc an etherd sunlightansthe michelson interferometer was
light is normally incident on a thin soap film and is reflected if the wavelength of this light is l and the index of refraction of the soap film
two light rays will interfere constructively with maximum amplitude if the path difference between them isa one wavelengthb one-half wavelengthc
a 10 volt battery connected to a capacitor delivers a charge of 05 coulombs the capacitance of the capacitor isa 2 x 10-2 faradsb 5 x 10-2
the greatest induced emf will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction
can you explain modulation why is it required what is world wide web www give the frequency range of speech
what are the basic block structure of communication system what do you understand by sky wave
which gates are known as universal gates draw the circuit symbols of n-p-n and p-n-p
what are the minority and majority charge carriers in a p-type semi conductorhow is a battery connected to a junction diode ina forward andb
what are isobars and isotopeswhat will be the ratio of the radii of two nuclei of mass numbers a1 and
what do you mean by thermal neutron what is its importancewhat do you mean by annihilation of matter given an
give two basic important characteristics of nuclear forcesneutrons are the best projectiles of process of nuclear reactions whygive any two
what is the equation of wavelength related with a moving