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aluminum wire has been utilized to replace copper wire through times of high copper prices if 20 gauge copper wire has
a 688 kg ice skater is skating along in a straight line in the positive direction at 88 ms when he bends down and
a uniform ladder of length l and weight w is leaning against a vertical wall the coefficient of static friction among
a 51-g handball moving with a speed of5 ms strikes the wall at an angle of37deg with the normal and then bounces off
the drawing shows three materials a b and c a ray of light strikes the andashb interface at an angle that now barely
question a contractor built 30 similar homes in a suburban development the homes have comparable size and amenities but
a constant force is applied to an object causing the object to accelerate at 10 ms21 what will the acceleration be if
1 a cylinder of gas is at room temperature 20oc the air conditioner breaks down and the temperature rises to 52oc
the distance among the eyepiece and the objective lens in a certain compound microscope is 184 cm the focal length of
a proton m 17 times 10ndash27 kg q 16 times10ndash19 c starts from rest at point a and has a speed of 40kms at point
a top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top the
in a large centrifuge utilized for training pilots and astronauts a small chamber is fixed at the end of a rigid arm
an astronaut in his space suit and with propulsion unit empty of its gas propellant strapped to his back has a mass of
a 200 kilogram stone is tied to a 0500-m length of string and swung around a circle at a constant angular velocity of
the figure below shows a thin uniform bar of length d 111 m and mass m 082 kg pivoted at the top the rod which is
a nearsighted patients far point is 0645 m from her eyes she is able to see distant objects in focus when wearing
a source of sound waves of frequency 07 khz is traveling during the air at 045times the speed of sounda what is the
in a mass spectrometer a beam of protons enters a magnetic fieldnbsp several protons make exactly a one-quarter
a coil is wrapped by 200 turns of wire on a square frame with sides 18cm a uniform magnetic field is applied vertical
a certain ore is 218 nickel by mass how many kilograms of this ore would you need to dig up to have 800 g of
at 40 c h2o2aq will decompose according to the followingreaction 2h2o2 aq -----gt 2h2o l o2 g the following data were
question why is it that that cinnamic acid and urea have similar melting point ranges when pure why do the impure
construct a born-haber cycle to calculate the lattice enthalpy of tlclgiven the following datasublimation of tls182
briefly explain the ideas or concepts behind beers law what are the two conditions that will make the molar extinction
a sealed glass jar contains air originally at a pressure of 100atm and a temperature of 0deg c discover the air