The atmosphere is heated most by which of the following? radiation conduction wind convection

How does an observation about an object differ from an inference about that object

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?

Why is the basic problem of economic,scarcity, a universal problem?