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a 450-kg person steps on a scale in an elevator the scale reads460 n what is the magnitude of the acceleration of the
a force is applied to a cord wrapped around a solid 20-kg cylinderwhich has a 15cm radius assuming the cylinder rolls
a solid ball has a weight of 30n when it is submerged in waterit has an apparent weight of 27n what is the density of
an x-ray photon is scattered at an angle of theta 1800deg from an electron that is initially at rest afterscattering
a block of mass 51kg rests on a plane inclined at an angle of22degrees the static coefficient of friction between the
a 25 g bullet fired horizontally hits a 135 kg block of wood placed on a horizontal surfacethe bullet penetrates into
a small object of mass 0025 kg and charge 25 microc hangs from the ceiling by a thread asecond small object with a
a solid ball has a weight of 33 n when it is submerged in water it has anapparent weight of 26 nwhat is the density of
after a tornado a 050g drinking straw was found embedded 45cm in a tree subsequens measurements showed that the tree
a standing wave on atight string experiment is set up in the laboratory one endof the string is attached to an
a single force acts on a 20 kgparticle-like object in such a way that the position of the objectas a function of time
ip referring to example 14-6 suppose the engineer adjusts the speedof the train until the sound he hears reflected from
consider two twins 25 years old one twin steps on a spaceship after studying physics in college and travels through
a solid disk rotates in the horizontal plane at an angular velocityof 0042 rads with respect to an axisperpendicular to
an astronaut of mass 774 kg is 299 m far out inspace with both the space ship and the astronaut at rest withrespect to
to push a 23 kg crate up a frictionlessincline angled at 21deg to the horizontal a worker exerts aforce of 969 n
two pieces of the same wire have the same length from one piece asquare coil containing a single loop is made from the
the heating element of a water heater in an apartment buildinghas a maximum power output of 37 kw four residents of the
to measure the speed of a bullet the following situation is setup a wooden blockm050kg is put on top of a fencepostwith
when the earth moon and sun form a right triangle with the moonlocated at the right angle as shown in the figure the
a 10g bullet is fired horizontally into a 300g wooden block initially at rest on a horizontal surface and becomes
one end of a 29 cm long aluminum rod witha diameter of 20 cm is kept at 460degcand the other is immersed in water at
what is capacitance a measure of physically describe a typical rc circuit explain how voltage measured across a
a source emitting sound in air at frequency of 1000 hz recedesfrom an observer with speed 15 speed of sound air is
a 13 kg dog is standing on the edge of astationary frictionless turntable of rotational inertia 95kgmiddotm2 and radius