Ear "popping" is an unpleasant phenomenon sometimes experienced when a change in pressure occurs, for example, in an airplane. If you are in a two-seater airplane at 3000 m and a descentof 100 m causes your ear to "pop, what is the pressure change that your ear pops at in millimeters of mercury? If the airplane now rises to 8000 m and again begins descending, how far will the airplane descend before your ears "pop" again?
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Physics, 22.06.2019 12:00
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
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Physics, 22.06.2019 12:00
Explain what happens at the saturation point when adding salt to water at room temperature.
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Physics, 22.06.2019 17:00
If you put a helium-filled balloon in the refrigerator, what will happen?
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Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
Ear "popping" is an unpleasant phenomenon sometimes experienced when a change in pressure occurs, fo...
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