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when the weather is overcast child hear the sound of thunder 15 seconds after the visible lightning if the propagation
point o is the source of the sound that vibrates constantly resulting in a wave running from o to p propagating at the
a spring with spring constantnbspknbspand lengthnbsplnbsphas massesnbspmnbspattached at each end of the spring and is
an ideal monatomic gas in a volume undergoes an adiabatic change fromnbspp1nbsp 82nbsptimes 105-pa andnbspv1nbsp
a light inextensible string fastened to a point in the ceiling passes under a smooth movable pulley of mass 5 kg over a
a source emits with intensity 10-5 watt m2 if the threshold intensity is worth 10-12 watts m2 set the sound intensity
a penny and a quarter are lying side by side at the bottom of a bucket of waternbspnbspwhich coin experiences the
list all electrical appliances in your house laptops ipads tvs etcheddetermine the watts for each applicancecalulcate
by what height must a long jumper raise his centre of mass when making a jump of 9m if his horizontal velocity on
a block with mass m 18-kg attached to the end of a spring undergoes simple harmonic motion on a horizontal
an object of mass m 428-kg is suspended from the ceiling by a string of length l 398-cm and mass m 164-g i flick the
questiona fisherman is fishing from a bridge and is using a 330-n test linein other words the line will sustain a
problemthe motion of the bucket illustrated below is controlled by the hydraulic cylinders ad cg and ef as a result of
an electron is moving at 45 x 106 ms parallel to a 10 mm diameter wire carrying 25 a if the electron is 30 cm from the
the diagram shows the forces involved in lifting a heavy object of mass l with the arms if the weight of the object is
what is the equivalent capacitance of the combination in the figure if a 90 v battery is connected across the
1 a car is initially travelling at 30 ms the driver hits the brakes and comes to a complete stop in 3 seconds assume
for the following structurea draw the free body diagramb compute the support
an airplane accelerates down a runway at 320 ms2 for 328 s until is finally lifts off the grounddetermine the distance
find the transmission coefficient for a finite square well for a bound statethe energy is greater than zero where the
1 an isolated parallel-plate capacitor has charge q on the upper plate and -q on the lower plate if the gap between the
a rock of mass m slides from a to b along the inside of a frictionless hemispherical bowlwith negligible air
trap-jaw antsa remarkable species of ants known as trap-jaw ants have a pair of jaws mandibles that can open to 180o
calculate the reactive force and reactive muscle moment at the knee for a seated leg extension with a weight of 35 45
a crank drive mechanism is illustrated below a uniform linkage bc of length l connects a flywheel of radius r rotating