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the position of a particle is given by x 31 cos t where x is in meters and t is in secondsa find the maximum speed and
a 420-kg object on a frictionless horizontal surface is attached to one end of a horizontal spring that has a force
a container of gas at 230atm pressure and 121c is compressed at constant temperature until the volume is halved it is
1 a 20 kg object is attached to a horizontal spring of force constant k 43 knm the spring is stretched 10 cm from
the mercury manometer shown in the figure figure 1 is attached to a gas cell the mercury height h is 120 mm when the
a diver 50m deep in 10c fresh water exhales a 12-cm-diameter bubblewhat is the bubbles diameter just as it reaches the
the position of a particle is given in cm by x 7 cos 9t where t is in secondsa discover the maximum speed msb discover
the figure shows a graph of the power dissipated in a resistor as a function of the resistance what quantity does the
the position of a particle in cm is given by x 7 cos 6t where t is in seconds1 what is the frequency hz2 what is the
two small particles have charges q1 40 c and q2 70 c if the magnitude of the electric force between the particles is
a particle moves so that its position in meters as a function of time in in seconds is r i 30 t2 jt k write
a driver is driving once again from nogales to tucson on i-19 past the wreck of the car that veered off the road and
a long pipe of outer radius 350 cm and inner radius 298 cm carries a uniform charge density of 522 mcm3 using gausss
question neglecting air friction and lift effects is the time a projectile by a horizontal acceleration stays in the
two cars start from rest at a red stop light when the light turns green both cars accelerate forward the blue car
an earthquake p-wave is passing during the earth what are the relative intensities and amplitudes of the wave at
at a distance of 450 m from a siren the sound intensity is 513 times 10-2 wm2 assuming that the siren radiates sound
sound is passing perpendicularly during an open window whose dimensions are 11 m x 075 m the sound intensity level is
a bird is flying directly toward a stationary bird-watcher and emits a frequency of 1380 hz the bird-watcher but hears
earths atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space if the protons all
two small positively charged spheres have a combined charge of 543times10-5 c if each sphere is repelled from the other
bob gauges the west wall of the room four times and calculates the mean of his data set to be 6293 m and the and
the nose of an ultralight plane is pointed south and its airspeed indicator shows 33ms the plane is in a 11ms wind
a bullet of mass 180 gram is fired horizontally from a gun with a velocity of 675 meter per second into a wooden block
in a student experiment a constant-volume gas thermometer is calibrated in liquid nitrogen -196degc and in boiling