Un dirigibile Goodyear contiene di solito 5400m3 di elio alla pressione di 1.1*105 Pa la temperatura dell'elio è 280K quanti kg di elio contiene il dirigibile?

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

What is the major limitation to the light microscope?

Which of the following is best determined by applying the principles of relativity and uncertainty rather than newtonian physics? a.the velocity of a satellite b.the speed of an object moving at close to the speed of light c.the length of an accelerating race car d.the momentum of a plane