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typically a tennis ball hit during a serve travels away at about 47 ms if the ball is at rest in mid-air when struck
what is the ph at the equivalance point of the titration of 30 ml of 02 m nitrous acid with 01 m
a 40kg child slides down a frictionless playground slide starting from rest at a height of 22 m he leaves the bottom of
an artillery shell of mass 1000 kg lying at rest on the ground accidentally detonates exploding into three pieces of
if 10 ml of 005 m naoh is added to a 20 ml solution of 01 m nano2 and 01 m hno2 what is the ph of the resultant
two loudspeakers in a plane 60 apart are playing the same frequency if you stand 140 in front of the plane of the
the electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 120
assume 40 g of solid nh42feso42 6h20 was used in 1 l of solution to create the solution tested what is the theoretical
a microscope has an objective lens of focal length 540 mm the objective forms an image 159 cm from the lens the focal
when 75 grams of ammonia 90 grams of carbon dioxide and 61 grams of water are reated to form ammonium carbonate whe is
a simple pendulum has a period of 25 sa what is its period if its length is made four times largerb what is its period
between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage typically this disc has a radius
write a balanced equation for the following reaction an aluminum-carbon compound that is 7497 aluminum by mass reacts
a sailboat is heading directly north at a speed of 18 knots 1 knot 0514 ms the wind is blowing towards the east with a
4 a source emits a random number of photons k each time that it is triggered we assume that the pmf of k is pkktheta
a metal sulfide m2co33 has a ksp of 53510-42 what is the molar solubility of this sulfide in water assume the sulfide
shazam and match filter shazam is a mobile phone app that helps users determine a song that may be currently playing
mix 2000 ml of 030 m hclo with 3000 ml of 020 m kclo the ka for hclo is 29 x 10-8 calculate the h3o the oh- the ph and
how many grams of sodium cyanide can be produced from 174 grams of calcium cyanide in the following reaction calcium
calculate the ph during the titration of 40ml of 1m hcl with 1m naoh solution after the following additions of basea
a fireman d 460 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of
how many types of nonequivalent protons does the following compound contain ch32chcl
a cue stick hits a cue ball with an average force of 24 n for a duration of 0028 s if the mass of the ball is 016 kg
what is the ph when 25ml of 20m ch3cooh has been titrated with 35ml of 10m
1 give three main causes behind the development of democracy in greece why was the polis the preferred form of