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will a dc motor actually produce voltage if it is spun in reverseitll make voltage if you spin it forwards too the only difference among a dc motor
what is the difference among free electron theory and band theory of solidsfree electron theorythis theory says that metals conduct electricity due
what is an alloyan alloy is a homogeneous hybrid of two or more elements at least one of which is a metal and where the resulting material has
what is density density is a physical characteristic and calculates of mass per unit of volume of a material or substance it is a measurement of the
what is the law of machinesmachines which are used to lift a heavy load are governed by the law of machines which says that the effort to be applied
does weight affect how far you jump for the same leg strength jumping method weight affects how far one can jumpacceleration force masswith more
how can light be defined in simplest formthe common explanation of light visible is electromagnetic radiation visible to the human eyeit is only a
what is a neutrona neutron is a subatomic particleneutron is one of the building blocks of the atom it has a mass of about 1675 x 10-27 kg its spin
how is specific gravity definedspecific gravity sg is a unit less quantity that provides the scientist or engineers an idea of how dense a substance
give one advantage of a scanning electron microscope over a transmission electron microscopethe sem has become more popular than the tem as it can
what are the steps to the scientific notationto write in scientific notation you should first move the decimal point of the number to where the
how is radiation emitted from the bodythe body radiates energy by thermal conduction by the skin to the air clothes etc around the body a small
does sunlight reflected off a mirror enhance the temperature of the sun-raysa standard planar mirror will not enhance the energy contained in the
when a radar gun says the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity the
how many pounds does one gallon of water weigh one wine calculates or us gallon of water weighs 834 pounds an imperial gallon is ten pounds of water
what are wave frontsphysics a wave front is an imaginary surface joining all points in space that are reached at the similar instant by a wave
what is time 1 this is the question that each true scientist dreads to be asked especially in a public setting by extremely inquisitive young
how does the elevation and air pressure affect the boiling point of waterthe only factor that explains the boiling point of water at any altitude is
what instrument is used to measure volumeliquid volume is calculated with beakers measuring cups spoons graduated cylinders and the like for regular
what is a newton metera unit of energy also called a joule when a force of 1 newton is applied on an object for a distance of 1 meter then 1 joule of
how much does automotive oil weighas rough guide engine oil generally weighs about 087 kglitre or about 72 pounds per us gallon unfortunately a rough
what is the proper formula used to calculate accelerationthere are a few the most famous is a fm where f is the net force applied to a mass m
what affect does electricity have on soilelectrical current and ions can cause definite molecules and moisture to adhere to soil large amounts of
what is neutral buoyancybuoyancy is the net upward force experienced by an object submersed in a fluid pascals principle dictates that fluid pressure
what is the measure of the force of gravity on an objectforce is the vector product of mass and acceleration f ma weight is a special case of that