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Determine the average speed of a molecule of NaCl in the atmosphere? (Assume room temperature.)
in m/s
You place 110 moles of hydrogen gas in a balloon of volume 2.6m3, and evaluate the pressure to be 1.7 times atmospheric pressure. Find the typical speed of a hydrogen molecule?
the most soaring vocal melody is in johann sebastian bachs mass in b minor. in one section the basses tenors altos and
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 455 Hz. Determine the ambulance's speed from these observations.
he Sun has an orbital speed of about 220 km/s around the centre of the Galaxy, Estimate the total mass of the Galaxy in Solar masses
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 14.0 cm behind the mirror. Determine the magnification of the image
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
question you wish to create an image that is 10 meters from an object. this image is to be inverted and half the height
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). What is the net inward magnetic flux through your body's entire surface
skid is going to attempt a field goal by kicking the football from a point 40 yards out from the goal. the ball must
You send a beam of light from a material with index of refraction 1.19 into an unkown material. What is the index of refraction of the unknown material
A motorcycle and a police car are moving in the same direction, with the motorcycle in the lead. What frequency does the motorcyclist hear
A 0.2 m^3tank equipped with a pressure regulator contains 4 kg saturated mixture of water at 2 MPa. find the amount of steam that has escaped from the tank
When a force of 19.0 N is applied to a spring, it elongates 0.0858 m. find out the period of oscillation of a 4.0 kg object suspended from this spring.
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