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a certain type of radio antenna is called a quaterwavelength antenna because its length is equal to one quarter of the
an inductor with l 30 mh isconnected in parallel with a capacitor with c 85 microfa if they are connected to an ac
one end of a steel youngs modulus of 20x1011 mm2 rod of radius r95mm and length l81cm is held in a vice a force of
two answers are required for this problema proton is accelerated through apotential difference of 1000 v after leaving
together two students exert a force of 825n in pushing a car a distance of 35 m how much work do the students do on the
a race car has a mass of 706 kg itstarts from rest and travels 420 m in30 s the car is uniformly accelerated during the
a 11 cm long animal tendon was foundto stretch 39 mm by a force of138 n the tendon was approximately roundwith an
when heated a 83 g sample of ammonium perchlorate nh4clo4 ignites and burns in the absence of any other material to
water is supplied to an office building 415 m high through a pipe at ground levela find the minimum pressure in the
279 g of n2o reacts completely with an equimolar amount of no2 to form elemental nitrogen and oxygen how much n2 is
a tire placed on a balancing machine in a service station startsfrom rest and turns through 55 revs in12 s before
a block mass of 400 kg is pulled 137 m along a frictionless horizontal table by a constant 158 n force direction 43
a physics student is standing on an initially motionlessfrictionless turntable with rotational inertia 031kgmiddotm2
elemental analysis of a 451 mg sample of unknown hydrocarbon shows that it contains 3942721 mg of carbon if the
a student librarian lifts a 22-kg book from the floor to a height of 125 m he carries the book 80 m to the stacks and
acid rain is caused in part by burning coal that contains sulfur impurities the sulfur is converted first to so2 which
a bullet having a velocity of 680 ms hits a target 510 m away if the speed of sound is 340 ms how soon after the bullet
a 20-kg rock that is initially at rest loses 407-j of potential energy while falling to the ground calculate the
sucrose c12h22o11 can be mixed with potassium nitrate to form an amateur rocket propellant called rocket candy which
1 of the following gases the most abundant in theatmosphere isa oxygenb nitrogenc carbon dioxided argon2 weather
a simple pendulum is 900 m longa what is the period of simple harmonicmotion for this pendulum if it is located in an
a 100-kg rocket is fired vertically from cape canaveral its fuel gives it 1960-j of kinetic energy by the time the
a strong acid is generally used to catalyze the fisher esterification of carboxylic acids what two steps in the
the total cross-sectional area of the load-bearing calcifiedportion of the two forearm bones radius and ulna is
a boy throws a stone horizontally at a speed of 220 ms from the top of a building of height 640 mnbsp what is the