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shells of mussels clams are mainly of calcium carbonate usually the shell is stable and its content is in equilibrium
determine the total impedance phase angle and rms current in an lrc circuit connected to a 90 khz 800 v rms source if l
two bumper cars moving on a frictionless surface collide elastically the first bumper car is moving to the right with a
iron has a density of 787 gcm3 what mass of iron would be required to cover a football playing surface of 120 yds times
a current of 4 a flows in a copper wire 8 mm in diameter the density of valence electrons in copper is roughly 9 times
a 55-kg vampire and 171-kg werewolf clash during the feat of strength part of the annual celebration of festivus the
calculate the concentrations of acetic acid and sodium acetate necessary to produce a ph 55 solution that is 05 m in
hold a rubber band between your right and left hands pull with your left hand does your right hand experience a force
a rocket with mass m is fired vertically upward at the instant it reaches an altitude of 800m and a speed of v350 ms it
a 500 ml sample containing ni2 was treated with 250 ml of 050 m edta to complex all of the ni2 and leave some excess
a 1000 ml aliquot of a dibasic compound with kb1 110-4 and kb2 110-8 was titrated with 100 m hcl calculate what the ph
monochromatic light falls on two very narrow slits 0050 apart successive fringes on a screen 590 away are 60 apart near
a billiard ball of mass m 0150 kg hits the cushion of a billiard table at an angle of 1 600deg at a speed of v1 300
the upper falls in yosemite national park at 440 m is among the 20 highest waterfalls in the world estimate the
a comet orbits the sun with a period of 8377 years the comets distance of closest approach to the sun perihelion is
a 350-turn solenoid 28cm long has a diameter of 20cm a 19-turn coil is wound tightly around the center of the solenoid
how many ml of 0100 m hcl should be added to how many grams of sodium acetate dehydrate at 5 degrees celsius to prepare
the thrust of a rocket is a gravitational force acting on the rocket the force of the exiting fuel gases on the rocket
a force lt2000gt n acts for 02 seconds on an object of mass 24 kg whose initial velocity was lt0150gt ms what is the
an organic mixture weighing 2416 grams contains inert materials and benzoic acid the benzoic acid is extracted into
calculate the gravitational potential energy at the surface of the sun how much would the sun have to shrink each
an electron going east with speed ve 04c collides with a proton going north with speed vp 03c this collision will
describe the effect of temperature on the stability of foods with glassy nature needs to be related to food
list factors that influence the size of ice crystals and corresponding methods to control the crystal
a 140 g ball moving at 050 ms in the x-direction is subject to a 015 n force in the - y-direction for 30 s a find the