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you are supposed to make a rube goldberg machine that releases a block on an inclined plane that has a length of 250m
consider a gas of neutrons in a nuclear reactor the neutron density is 108 neutronscm3 in an operating reactor which
consider three containers each at the same temperature and pressure one holds a classical gas one holds a gas of
when you drive your car over a bump the springs connecting the wheels to the car compress your shock absorbers then
a simple pendulum is made of a small blob of mass m 7000 kg attached to the end of an inextensible wire the angular
an air-track glider attached to a spring oscillates with a period of 150 seconds at t 0 the glider is 440 cm left of
light with a frequency of 255 x 1015 hz ejects electrons from the surface of aluminum which has a work function of 428
suppose you take and hold a deep breath on a chilly day inhaling 30 l of air at 0 degrees c assume that air pressure
a college student is working on her physics homework in her dorm room her room contains a total of 61026 gas molecules
in fig 9-64 block 2 mass 10 kg is at rest on a frictionless surface and touching the end of an unstretched spring of
a mass m1 5 kg sits on a table top connected by an ideal rope and pulley with a hanging mass m2 1 kg the coefficient
suppose an astronomical telescope is being designed to have an angular magnification of 316 if the focal length of the
zero a hypothetical planet has a mass of 40 1023 kg a radius of 30 106 m and no atmosphere a 13 kg space probe is to be
a 940 cm pendulum is released from a small angle after 113 oscillations the amplitude is one half of its original value
you are asked to make some measurements of microwaves using a polarizing grid consisting of metal wires since an
a stationary mass m decays into a particle and a photon if the speed of the particle is v what is its mass what is the
state and explain equipartition theorem what is the physical meaning of equation uthermal n f k t why is uthermal not
a bicyclist is coasting down a hill with a slope of 8 deg into a head wind of 5 msec measured relative to the ground
two atomic particles approach each other in a head-on collision each particle has a mass of 181 x 10-25 kg the speed of
as shown on the right a uniform boom with a mass of 300 kg and a length of 200 meters is suspended at its left end by a
suppose that the sound level of a conversation is initially at an angry 74 db and then drops to a soothing 50 db
a current of 130 ma is maintained in a single circular loop of 320 m circumference a magnetic field of 0710 t is
a certain loudspeaker system emits sound isotropically with a frequency of 2290 hz and an intensity of 0795 mwm2 at a
a large steam pipe is covered with 17-cm-thick insulating material of thermal conductivity 021 js m degc how much
a wire is formed into a circle having a diameter of 100 cm and placed in a uniform magnetic field of 250 mt the wire