Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature Tand rejects to its sink at temperature T2. For what value of T the efficiencies of the two engines are equal

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block

Energy flows from the producer level to the level. is called

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc