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an athlete needs to lose weight and decides to do it by pumping irona how many times must an 850 kg weight be lifted a
how do we equilibrate a pipette with the solution we are measuring why should we equilibrate it with the soultion we
in a single-slit experiment light of wavelength 500 nm is used to produce a diffraction pattern on a screen 40 m away
two towboats are pulling a plane in the hudson river towboat 1 pulls with a force v1 6100n at an angle of 1 410o
a stock solution has a concentration of 50 what is the final concentration if we mix 1 part of the solution to 4 parts
a mad doctor believes that baldness can be cured by warming the scalp with sound waves his patients sit underneath the
a friend of yours is loudly singing a single note at 380hz while racing toward you at 265ms on a day when the speed of
an organic compound contains 667 c 112 h and 221 o by mass the compound boils at 796c 100c and 0970 atm the vapor has a
a 160-m-long string is under 220n of tension a pulse travels the length of the string in 520ms what is the mass of the
two narrow slits are illuminated by a laser with a wavelength of 549nm the interference pattern on a screen located x
dry air is 78 nitrogen gas 21 oxygen gas and 09 argon gas these gases can be separated by distillation after the air is
what is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 409m
a simple magnifier of refractive power 150 d is used to observe a beetle on a students desk if the image of the beetle
a small motor is mounted on the axis of a space probe with its rotor the rotating part of the motor parallel to the
what spectral features including carbon spectra ir spectra proton spectra and mass spectra differentiate benzoic acid
what volume of hydrogen gas at stp is required for the complete reaction of 500 g of nitrogen in the following reaction
a car backs out of a driveway in front of a fire truck the driver of the fire truck takes 018s to hit the brakes the
a mixture containing 0432 mol heg 0312 mol neg and 0721 mol arg is confined in a 800 l vessel at 25 degc and a total
you have a telescope that has an objective lens with a diameter of 600 mm and has a focal length of 1500cma what
ocean waves of wavelength 100 m have a speed of 620 ms ocean waves of wavelength 200 m have a speed of 280 ms suppose
calculate how much acetylene c2h2 can be produced from 358g of h2o and an excess of cac2 if the percent yield for this
an object is placed 180 cm in front of a converging lens with a focal length of 600 cma determine the image location
electrons accelerated by a potential difference of 1286 v pass through a gas of hydrogen atoms at room
when limestone calcium carbonate is heated it decomposes to form lime calcium oxide and carbon dioxidea write a
you kick a rock off a cliff which is 2222 m high with a horizontal velocity of 1390 ms and an initial vertical velocity