Suppose you wanted to observe a planet around another star with direct imaging. would you try to observe in visible light or in the infrared? why? would the planet be easier to see if it were at 1 au or 5 au from its star?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.