Сейсмическая упругая волна, падающая под углом 450 на границу раздела между двумя слоями земной коры с различными свойствами, испытывает преломление. В первой среде волна распространяется со скоростью 5,65 км/c, во второй среде со скоростью 4 км/с. При этих условиях угол преломления равен … 300

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Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.