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a person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 357 db the
a 10000kg railroad car is traveling with an initial speed of 240 ms when it strikes an identical railroad car that is
a 20 kg ball is thrown at the suspended 294 kg block with a velocity of 35 ms the coefficient of restitution between
a 500 g object moving to the right at 20 cms makes an elastic head on collision with a 100 g object that is initially
a concave spherical mirror has a radius of curvature of magnitude 274 cma determine the object position for which the
you would like to balance a meter stick on your finger the meter stick has a mass of m 02 kg a how far from the end
a 6000 kg freight car rolls along rails with negligible friction the car is brought to a rest by a combination of two
a 20-cm diameter circular saw blade has a mass of 079kg distributed uniformly as in a diska what is its rotational
a 100 resistor a 0100x10-6 capacitor and a 0300h inductor are connected in parallel to a voltage source with amplitude
a estimate earths rotational inertia assuming it to be a uniform solid sphereb what torque applied to earth would cause
a large roller in the form of a uniform cylinder is pulled by a tractor to compact earth the cylinder has dimeter of
two concentric metal spheres are found to have a potential difference of 6460 v when a charge of 2816middot10-8 c is
in a particluar x-ray tube an electron approaches the target moving at 2 108 ms it slows down on being deflected by a
a 23-g bullet traveling 225 ms penetrates a 32-kg block of wood and emerges cleanly at 185 ms if the block is
the gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder
a particle moves along the x axis according to the equation x 50t 10t2 where x is in meters and t is in seconds a
an archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 250 ms on a smooth
a long straight wire carrying a current of 432 a is placed along the axis of a cylinder of radius 487 cm and a length
a jet airplane is in level flight the mass of the airplane is m 8830 kg the plane travels at a constant speed around a
when cars are equipped with flexible bumpers they will bounce off each other during low-speed collisions thus causing
find the photon energies for the three longest wavelengths in the balmer series for the hydrogen atom enter your
the magnetic force on a straight 031 m segment of wire carrying a current of 45 a is 15 n what is the magnitude of the
a proton traveling to the right along the x-axis enters a region where there is a magnetic field of magnitude 37 t
the magnetic force acting on a wire that is perpendicular to a 37 t uniform magnetic field is 64 n if the current in
a truck drives onto a loop detector and increases the downward component of the magnetic field within the loop from 12