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A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in every directions. The intensity of the sound is 2.0 x 10-6 W/m2 at a distance of 120 meter from the explosion. Compute the distance from the source at which the intensity is 0.80 x 10-6 W/m2.
A doubly charged helium atom whose mass is 6.6 10 to 27 kg is accelerated by a voltage of 2200 V. What will be its radius of curvature if it moves in the plane perpendicular to a uniform 0.308 T field?
Low-frequency vertical oscillations are one possible cause of motion sickness, with 0.20 hz having the strongest effect. How much time elapses between two waves hitting the ship
Calculate the height of the potential barrier for a head on collision of 2 deutrons. Assume that they can be taken as hard spheres of radii 2fm.
what would the g-force, kinetic energy and overall force a human head would absorb if they were broadside t-boned by an 80,000 pound tanker that was moving 45 miles per hour and that head absorbing party
consider a 150 ohm and 180 ohm resistor connected in a parallel combination with a 9 volt battery. determine the total resistance of the parallel combination.
A severe thunderstorm dumped 2.4 in of rain in 30 min on a town of area 42 km2. What mass of water (in kg) fell on the town
You have 3.0 moles of helium gas initially at a temperature of 350 K, and a pressure of 0.20 x Patm, How much heat flows into the gas
When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. What is the maximum kinetic energy of the photoelectrons
A charge of +2.00 x 10^-9 C is placed at x = 0.0 m. A second charge of +4.00 x 10^-9 C is placed at x = 1.5 m.
ball a with a mass of 0.500kg is moving east at velocity of 0.8 ms. it strikes ball b also of mass 0.5 kg which is
a block of mass m1 = 11 kg is held at the top of a frictionless inclined plane at point A , 6m above the ground. What is the work done on the spring as it is compressed
The coefficient of linear expansion of a certain solid is 11 × 10^-6/C°. Assuming this solid behaves like most solids, what is its coefficient of volume expansion
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