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q isolation and purification of metalsmetals as a group of elements have acquired a unique importance in the modern world however nature does not
what does gravitational force depend ongravitational force depends on mass and distancetherefore the formula for calculating gravitational force
how do you find your body volume using a tape measure accurately calculates a container into which your body will fit comfortably once you know the
what are the characteristics of dead starsdead stars are generally cold balls of material in empty spacea teaspoonful of white dwarf matter would
what is the force required to accelerate a mass of one kilogram one meter per second per second basically you have defined the newtonforce is the
what is curvilinear motionbasically its any motion thats produced or bounded by curved -- as opposed to straight -- linesin high school curvilinear
why does sun appear flat during sunrise and sunsetthe sun rays have to travel by a larger atmospheric distance most of the blue light and shorter
what is the difference between diffraction and interference diffraction is the bending of waves around an obstacle whereas interference is the
is negative mass antimatterno there is really no such thing as negative mass even antimatter has mass which is always a positive that is
what seven colors appear to be white when mixed togethera redb orangec yellowd greene bluef indigo andg violetthough with the human eye only red
does a soccer ball go faster in the air on a cold or hot dayon a hot day the air molecules have much kinetic energy - they move more freely they will
why does it take longer to heat a bucket of water than a cup of water because there is extra water in a bucket than in a cup and more energy has to
what two properties of electromagnetic waves are used to attach info to radio signalsa by varying the amplitude of a radio wave you can determine
explain moment of inertiamoment of inertia is the term used to calculate or quantify the amount of mass located at an objects extremities for
why does heated air expandtemperature is often explained as the average thermal energy of the substance at hand therefore the hotter a substance is
does solar radiation contain a complete spectrum of all forms of electromagnetic radiationyes it doesit have all the forms of radiation but 99 of its
what is geocentric it is a science where the earth is the center of the solar system and the other planets and the sun revolve around the earth
why does a glass filled with water shatter when you run your finger along the rim of the glass a piece of crystal stemware has a natural or resonant
what evidence is there supporting the big bang theoryin short the universe is increasing all of the galaxies we have observed that are great distance
what are the branches of physicsthe basic branches of physics area classical mechanicsb electromagnetism including opticsc relativityd thermodynamics
what is the difference between the atomic theory and the kinetic theoryatomic theory is all about structure of an atom ie its composition like an
how does laser printer workswhen a text or image is entered into the cpu it makes a series of varying voltages this controls a led light emitting
why does heat cause matter to expandwater contracts as it cools like all other liquids unless it reaches a temperature of about 4 degrees celsius at
how do you magnetize metalyou can rub a magnet with the metal in single direction for a bunch of times the more the better and that will magnetize it
what are newton s laws of motion1 a body at rest will stay at rest and one in motion will stay in motion unless and unless acted upon by an external