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a uniform ladder of length l and weight 235 n rests against a vertical wall the coeficient of static friction between
a child slides down a slide with a 26deg incline and at the bottom her speed is precisely half what it would have been
calculate the magnitude of the linear momen- tum for each of the following cases a a proton with mass 167times1027 kg
a 70kg hiker climbs to the second base camp on nanga parbat in pakistan at an altitude of 3900m starting from the first
a glass lens with radii r130cm and r230cm has an index of 160 and a thickness of 30cm it is placed in the end of a tank
a 0156 toy is undergoing shm on the end of a horizontal spring with force constant 306 when the object is 150times102
four passengers with a combined mass of 300 compress the springs of a car with worn-out shock absorbers by 440 when
a certain pipe has resonant frequencies of 350 hz 490 hz and 630 hz with no other resonant frequencies between these
a force of 210n is applied to a 500 kg box the force is directed 20 degree above the horizontal the coefficient of
dolphins emit ultrasonic waves with a frequency as high as 25 105 hz what is the wavelength of such a wave in seawater
a harpsichord string of length 150 m and linear mass density 250 mgm vibrates at a fundamental frequency of 4500 hza
during the initial charge of a capacitor up to its max charge vo the initial energy stored in the capacitor is 12cvo2
light visible to humans consists of electromagnetic waves with wavelengths in air in the range 400-700 nm 40 10-7 m to
a boy is riding a bicycle which has tires with a diameter of 62cm if he travels a distance o f 0320km in a time of 100
a duck is floating on a lake with 28 of its volume beneath the water what is the average density of the
a 20 kg child is riding a 54 kg bike with a velocity of 54 ms to the northwest awhat is the total momentum of the child
a vibrating string has a fundamental frequency of 225 hz the tension is then increased by a factor of 25 what is the
a long thin rod lies along the x-axis one end is at x200 m and the other at x300 m its linear mass density 0400 x20600
decreasing the resistance of an ammeters shunt resistance a allows it to measure a larger current at full scale
an antifreeze solution is made by mixing ethylene glycol 1116 kgm3 with water suppose the specific gravity of such a
use kirchhoffs laws to set up three simultaneous equations that can be solved for the value of each of the currents in
a wheel rotates about a fixed axis with an initial angular velocity of 25 rads during a 40-s interval the angular
a lab technician uses laser light with a wavelength of 670 nm to test a diffraction grating when the grating is 402 cm
an 85 kg jogger is heading due east at a speed of 16 ms a 55 kg jogger is heading 34deg north of east at a speed of 36
place on magnet on a table and hold the other in your hand well above the first from directly above slowly lower the