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the watt is the derived si unit of power the measure of energy per unit time 1w 1 j-s a semiconductor laser in a cd
a 20ml volume of previously boiled deionized water is added to the conical flask to prepare the sample for titration
a helicopter has 30 m long rotor blades rotating at an angular speed of 63 rads what is tangential speed of each blade
odors in wastewater are caused chiefly by the products of the anaerobic reduction of organic nitrogen and
a projectile is fired at an upward angle of 45deg from the topof a 288 m cliff with a speed of212 ms what will be its
a solid cylinder has a moment of inertia 2 kg m2and is rotating freely at a fixed angular velocity of 12 rads asecond
a transformer consisting of two coils wrapped around an ironcore is connected to a generator and a resistor there are
zinc metal reacts with hydrochloric acid to produce zinc ii chloride and hydrogen gas how many liters of hydrogen gas
a hamster gets on a stationary wheel with radius 015 m and runs until wheel rotates at angular speed of 120 rads in 40
in some places insect zappers with their blue lights are afamiliar sight on a summers night these devices use a
a what is the ph of a kachac buffer if the salt concentration is 60 higher than that of the acidb equal volumes of two
to make a bounce pass a player throws a 060-kg basketball towardthe floor the ball hits the floor with a speed of 54ms
when spiking a volleyball a player changes the velocity of the ball from 42ms to -24ms along a certain direction if the
using heisenbergs uncertainty principle calculate the uncertainty in the position of the followingb a proton moving at
a person who weighs 635 n steps onto aspring scale in the bathroom and the spring compresses by075 cma what is the
a string is wrappedaround a cylinder of radius 65 cm and pulled so that the tensionin the string is 14 n what is the
an airplane propeller is rotating at 1900 rpm revmina compute the propellers angular velocity in radsb how many seconds
an electron enters a region of magnetic field of magnitude 0010 0t traveling perpendicular to the linear boundary of
a 1050-kg sports car is moving westbound at 150 ms on a levelroad when it collides with a 6320-kg truck driving east on
a cosmic-ray proton in interstellar space has an energy of 100 mev and executes a circular orbit having a radius equal
consider a galvanometer with an internal resistance of 60omeganbsp if the galvanometer is being used as an ammeter with
a 10kg wooden box is resting on wooden ramp that can berotated to any angle from 0o to 90o what is the maximum angle
three 05 kg particles form an equliateral triangle with 06 msides the particles are connected by rods of negligible
when you drop a 40 kg apple earth exerts a force on it that accerlerates it at 98 mss toward earths surface according
when it is burned 1 gallon of gasoline produces 130times108 of energy a 1300 car accelerates from rest to 360 in 100