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a beryllium ion with a single electron denoted be3 is in an excited state with radius the same as that of the ground
a speaker generating a tone at 281 hertz is moving towards a stationary observer with a speed of 59 meter per seconda
at a distance of 65 centimeter a mosquito can barely be heard at a sound level of 49 dba evaluate what is the intensity
a headphone manufacturers warn that to protect your hearing the sound level should not be greater than 68 db compute
a 12 volt battery potential source is connected across a 6 microf air filled capacitora determine how much energy can
two conducting rails 30 centimeter apart rest on a 5o ramp they are joined at the bottom by a 060 omega resistor and at
five long parallel wires in anbspxynbspplane are separated by distancenbspdnbsp 35 centimeter the currents into the
a large rectangular raft density 408 kgm3 is floating on a lake the surface area of the top of the raft is 74 m2 and
you hook a pipe with an hourglass shape to a water hose the diameter of the large ends is 6 centimeter and the narrow
the potential difference between a pair of oppositely charged parallel plates is 439 volta if the spacing between the
an air-filled capacitor consists of two parallel plates each with an area of 760 cm2 separated by a distance of 180
a determine how much charge is on each plate of a 5 microf capacitor when it is connected to a 12 volt batterymicrocb
an electron moves in a circular path perpendicular to a uniform magnetic field if the speed of the electron is 250 x
a determine the speed of a proton that is accelerated from rest through a potential difference of 148 voltmsb determine
a meteor with a mass of 1 kilogram moving at 20 kms collides with jupiters atmosphere the meteor penetrates 100
an ideal air-filled parallel-plate capacitor consists of plates that are 1 millimeter apart and have an area of 15 x
a solenoid of length 50 centimeter is made of 11000 circular coils it carries a steady current of 11 amp near its
the solid wood cylinder madder of oak with a uniform density of 750 kgm3 is dropped in the ocean which has a density
a long string is moved up and down with simple harmonic motion with a frequency of 42 hertz the string is 543 meter
a spherical oil droplet with nine excess electrons is held stationary in an electric field between two large horizontal
a 471 kilogram girl is standing on a 162 kilogram plank the plank originally at rest is free to slide on a frozen lake
the potential difference between two square parallel plates is 4 volt if the plate separation is 6 centimeter and they
two separate radioisotopes a and b with two different half lives t12a290 days and t12b822 days are used in a laboratory
a block of wood of mass 108 kilogram and density 442 x 102 kgm3 floats on watera find the minimum amount of aluminum
a converging lens with a focal length of 112 centimeter forms a virtual image 810 millimeter tall 178 centimeter to the