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a 13 kg block is at rest on a level floor a 400g globof putty is thrown at the block so that the putty
gycine c2h5o2n is important for biological energy the combustion of glycine is given by the equation 4c2h5o2n s 9o2 g
an object undergoing simple harmonic motion takes 019 s to travel from one point of zero velocityto the next such point
a plastic cup is heated past its melting pointthen remolded and cooled based on thisinformation we can say this
a person sitting in a stationary boat notices the waterwaves passing by the bow of the ship once every 4 seconds
a dedicated sports car enthusiast polishes the inside andoutside surfaces of a hubcap that is a section of a sphere
a contact lens is made of plastic with an index of refractionof 160 the lens has a focal length of 230 cm and its
a resting adult of average size converts chemical energy infood into internal energy at the rate of 120 w called
if you put 1kg of glass in contact with an equal mass of water andits temperature drops 5 degrees by how much will the
a common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal
at the intersection of texas avenue and university drive ayellow subcompact car with mass 950 kg traveling easton
if 412g of nh42so4 all numbers are subscripts is dissolved in enough water to form 220ml of solution what is the
auto companies frequently test the safety of automobiles byputting them through crash tests to observe rge integrity of
the heat capacity of a particular piece of metal is 987 joulesgram-celsius when dropped in 100 ml of water the
a 120 v electric coffeepot draws a current of 06 a what is the resistance of its heating
use le chacircteliers principle to explain how adjusting the ph enables the control of c2o42- in a solution of oxalic
studies have shown that some people can detect 577 nm light with as few as 100 photons enteringthe eye per second what
we want to supply 1 inch of water to an acre garden our water pump can supply water at a rate of 40 gallonsmins how
a surfer is catching a wave suppose she starts at the top ofthe wave with a speed of 14 ms and movesdown the wave until
write the balanced neutralization reaction between h2so4sulfuric acid and koh potassium hydroxide in aqueous
a 650kg elevator starts from rest and moves upwards for 3sec with aconstant acceleration until it reaches a cruising
high power lasers are used to cpmpress a plasma a gas ofcharged particles by radiation pressure a laser
a cylindrical fishing reel has a moment of inertia of i 659e-4kgm2 and a radius of 411 cm a friction clutch in thereel
a 014-kg pinecone falls 16m on the ground where it lands with aspeed of 13 msa what speed would the pinecone have
a positron q e moves at 43x107 ms in a magnetic field of magnitude 052 t the magnetic force on the positron has