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instantaneous speed the instantaneous speed is the speed that something has at any instant of time the speed measured
average speed the average speed is the total distance covered over the time interval it took to cover that distance
suppose you have a spring-loaded projectile launcher aim it straight upwards compress the spring 1 cm then launch a
a string on a musical instrument vibrates in its fundamental mode with nodes on either end the length of the vibrating
a ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center the disk has mass md 33 kg
two identical charges 55micro coulomb charges each of mass 1mg are initially spaces 65cm apart they are released at the
as a hiker in glacier national park you are looking for a way to keep the bears from getting at your supply of food you
a heat engine operates between a cold reservoir at 10 c and a hot reservoir at 200 c if the engine performs near
an astronaut measures her mass by means of a device consisting of a chair attached to a large spring the period of
a copper rod 830 cm long and with a diameter of 13 cm is used to poke a fire the hot end of the rod is maintained at
an object of mass 68kg is attached to a spring of force constant 1870 nm the object is set into simple harmonic motion
gas is contained in an74l vessel at a temperature of 20degc and a pressure of92atma determine the number of moles of
a moving 450 kg block collides with a horizontal spring whose spring constant is 343 nm the block compresses the spring
a circular loop with radius of 25 cm is placed in a b field so that the normal of the loop plane is parallel to the b
estimate the amount of energy that is wasted each day in europe due to an additional inefficiency of 5 on top of the
what is the average angular velocity of the earth around the sun assume a circular counterclockwise orbit and 365 days
rutherfords scattering experiments gave the first indications that an atom consists of a small dense positively charged
using a highly sensitive parabolic sound collector tom records the frequency of a tuning fork as it drops into the
a hamster runs in its wheel for 27 hours every night if the wheel has a 68 cm radius and its average angular velocity
a dancer completes 22 revolutions in a pirouette what is her angular
a strings tension force supplies the centripetal force needed to keep a yo-yo whirling in a circlea what force supplies
you are designing a roller coaster for a new amusement park on the moon you envision a loop with a radius of 35 meters
a rotating space station has radius 131e3 m measured from the center of rotation to the outer deck where the crew lives
you are playing tetherball with a friend and hit the ball so that it begins to travel in a circular horizontal path if