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a 2000 kg car is rolling at 20 ms you would like to stop the car by firing a 18 kg blob of sticky clay at it how fast
when looping the loop the blue angels stunt pilots of the us navy fly their jet aircraft along a vertical circle of
an 800-n billboard worker stands on a 40-m scaffold supported byvertical ropes at each end if the scaffold weighs 500 n
an old mining tunnel disappears into a hillside you would like to know how long the tunnel is but its too dangerous to
a 72 skydiver can be modeled as a rectangular box with dimensions 25 cm40cm 18m what is his terminal speed if he falls
a small block of mass m 18 kg slides without friction along the loop-the-loop track shown the block starts from the
a uniform metal rod with a mass of29kg and a length of09m is attached to a wall by a hinge at its base a horizontal
a spring is resting vertically on a table a small box is dropped onto the top of the spring and compresses it suppose
the earth rotates about its axis once in one sidereal day of 23 h 56 min calculate the centripetal acceleration of a
a cylindrical beaker of height 0100 and negligible weight is filled to the brim with a fluid of density 890 when the
four particles each of mass 200 g that form a square with an edge length of d 0800 m if d is reduced to 0300 m what is
in a certain binary-star system each star has the same mass which is 96 times of that of the sun and they revolve about
the generator in a purely capacitive ac circuit has an angular frequency of 126 rads and a maximum voltage of vmax 129
a lightbulb filament has diameter 570times102 mm and carries 0857 aa find the current density in the filamentb find the
a balloon of volume 43 m3 contains argon gas at a pressure of 20 105 pa and room temperature 20degc what is the total
a 500g ball moving at 100cms x collides with an identical ball at restthe incoming ball scatters at 30 degrees with
a volleyball is spiked so that its incoming velocity of 479 ms is changed to an outgoing velocity of -120 ms the mass
youre working on a new high-speed rail system it uses 6000-horsepower electric locomotives getting power from a single
two events occur in an inertial system k as follows event 1 x1 a t1 2ac y1 0 z1 0 event 2 x2 2a t2 3a2c y2 0 z2
a 50 g mass is attached to a massless spring and allowed to oscillate around an equilibrium according to yt 12sin
a constant voltage of 700 v has been observed over a certain time interval across a 230 h inductor the current through
a force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete
a 1130 kg car traveling initially with a speed of 2560 ms in an easterly direction crashes into the back of a 9 550 kg
the spin cycles of a washing machine have two angular speeds 409 and 608 the internal diameter of the drum is 0610a