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catapults date from thousands of years ago and were used historically to launch everything from stones to horses during
if a 121 ev photon was absorbed by a hydrogen atom initially in its ground state which then emits 2 photons what are
visible light consists of photons having energies that range from 28times1019 j to 50times1019 j what is the range of
an ac voltage with an amplitude of 116 v is applied to a series combination of a 151 f capacitor a 129 mh inductor and
the speed of an ion in a particle accelerator is doubled from 0430c to 0860c the initial relativistic momentum of the
1 a sports car accelerates in third gear from 48 kmh to 835 kmh in 37 sa what is the average acceleration of the
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a particle known as a pion lives for a short time before breaking apart into other particles suppose a pion is moving
a 031 mev x-ray photon collides with an electron and scatters straight back the way that it camea what is the energy of
a photon with a wavelength of 750e-11 m is scattered by a loosely bound electron in a metallic target and exits at an
describe the characteristics of the ph scale compare and contrast acids and bases provide examples of some of the
two converging lenses each of focal length 170 cm are placed 392 cm apart and an object is placed 300 cm in front of
find the diameter of the eye structure that causes a circular diffraction pattern with the first dark ring at an angle
a 25-g lead bullet is shot with a speed of 240 ms into a wooden wall assuming that 70 of the kinetic energy is absorbed
a 1000-turn loop radius 0045 m of wire is connected to a 500 ohm resistor as shown in the figure a magnetic field is
a pair of closely spaced parallel conducting plates charged with equal and opposite electric charges produces a uniform
a magnetic field has a magnitude of 120 10-3 t and an electric field has a magnitude of 540 103 nc both fields point in
fireflies emit flashes of light to communicate directly converting chemical energy into the energy of visible-light
the microwaves in a microwave oven are produced in a special tube called a magnetron the electrons orbit in a magnetic
you look through a polaroid sheet at a 75 w light bulb 300 m awaya find the intensity of the light you seeb next you
an object with a mass of 160kg is at rest on a horizontal frictionless surface of a rink a player applies a force of
a a source of electromagnetic waves radiates power uniformly in all directions at a single frequency at a distance of
a in a certain rlc circuit the rms current is 651 a the rms voltage is 223 v and the current leads the voltage by
a an ac voltage with an amplitude of 112 v is applied to a series combination of a 203 f capacitor a 110 mh inductor