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one speaker generates sound waves with the amplitude a how does the intensity change if we add two more speaker at the
when a 500 kg skier initially at rest skis down a ramp from a vertical height of 20 m she attains a speed of 40 msa
aif 792 kj 79 200 j of energy is transformed by a compact fluroesecent light cfl bulb in 10 h 3600 s what is the power
a pendulum bob of mass 0200 kg is pulled to one side such that it has a height of 050 m relative to its rest position
in one dimension a particle of massnbspmnbspis in the ground state of a potential which confines the particle to a
describe the changes of energy forms of an arrow from the time just before its release from the bow until its landing
a a 10 kg fat gopher is lifted to a height of 100 m using a rope what is the work done in raising the rodent upward
read the articles on the pioneer spacecraft anomaly how does this affect newtons law of universal gravitation do you
two charged spheres of mass 0010 kg are suspended by two rods and are separated by a distance of 011 meach sphere has a
describe the main challenges that scientists face in collecting data and making observations on how the road was made
a charge is placed at x 0 meters and another charge of 5 micro-coulombs is placed at x 5 m both on the x axis the
please explain in detail thank you1predict the sign of deltas for each processthe boiling of wateri2g rarr i2scaco3s
certain popular antacids are dissolved in water with much fizzing and are taken in the form of a solution when the
please show all steps and calculations 1 in france grapes are 195 euros per kilogram what is the cost of grapes in
calculate the work w in j when 48 litre of an ideal gas at an initial pressure of 281 atm is expanded isothermally to a
a 100 m3 tank open at the top has a 10 meter diameter the tank is filled with gasoline that ignites how long will the
a 3000 ml salt water sample contains 0308 mol nacl calculate the concentration of nacl in the
fish like other animals need oxygen to survive oxygen gas dissolved in water can be used by fish which remove it from
the properties of a perfect gas are a perfect gas comprises of an large number of indistinguishable particles the
how many atoms of hydrogen are represented in 2nh42so4when the following equation is balanced with the lowest whole
please advise if pb2aq reacts with the following metals zns cus and pbs i also need to know the reduction oxidation and
a sample of solid potassium chlorate is heated strongly for 30 minutes the sample melts and bubbles of gas escape
consider a situation in which 112nbspgnbspofnbspp4nbspare exposed to 112nbspgnbspofnbspo2q1nbspwhat is the maximum
1 calculate the mass of water produced when 218 g of butane reacts with excess oxygen2 calculate the mass of butane
under certain circumstances carbon dioxidenbspco2g can be made to react with hydrogen gasnbsph2g to produce