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light enters a substance from air at 30 degrees to thenormal it continues through the substance at 23 degrees tothe
a 58 kg skier is going down a 35 degree slope the areaof each ski in contact with the snow is 03 m2 determine the
a galvanometer has a full-scale current of 011 ma and a coil resistance of 57 omega this instrument is used with a
a ship sets out to sail to a point 196 km due north an unexpected storm blows theship to a point 114 km due eastof its
a 550-w space heater is designed for operation ingermany where household electrical outlets supply 230 v rmsservice
two capacitors are connected in parallel across the terminals of abattery one has a capacitance of 29 uf and the other
a hockey puck is sliding across a frozen pond with an initial speedof 99 ms it comes to rest after sliding a distance
i- a 1500 kg car takes 45 minutes to climb from an elevationof 1800 m to 2800m as the car drives along a mountain roada
a piano string with a length of 115-m and a mass of 200-g isunder a tension of 630times103 na what is the fundamental
to stir a mixture of liquids consistently and gently abiologist designs a simple mechanical system consisting of
a 110-watt lightbulb uses an average power of 110 w whenconnected to an rms voltage of 120 va what is the resistance of
you would like to store 81 j of energy in the magnetic fieldof a solenoid the solenoid has 530 circular turns
a 50 kg block of aluminum isheated at atmospheric pressure so that its temperature increasesfrom 20degc to 38degca find
the circuit shown in the figure consists of a 52-vbatterya 28-mh inductor and four 52-ohm resistorsa find the
a parallel-plate capacitor has plates of area 02 m2separated by a distance of 0003 m what is the strength of the
a thermodynamic system undergoes a process in which itsinternal energy increases by520 j if at the same time220 j of
excited states do not in general live very long before they decaysuppose a certain excited state lives just 10-7 s in
an excited iron fe nucleus mass 57u decays to its groundstate with the emission of a photon the energy availabel from
a projectile is fired up into the air at a speed of 119 ms at an angle of 23deg relative to the horizontal determine
three 10-c charges are equally spaced on a straight line the separation of each charge from its neighbor is 100m find
an organ pipe is 20 m long assume the pipe is cylindrical withone closed and one open enda what is the longest
a 150 mw laser puts out a narrow beam 200 mm indiameter what is the average rms value of the
an electron is released near a a point charge b an charged line of infinite length or c an infinite charged plane in
a storage tank has a diameter of 80 ft a height of 25 feet andcontains oil to a height of 15 ft the suction pumps
monochromatic light is incident on a grating that is 75 mmwide and ruled with 50000 lines the second-order maximum