In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases?
O
A. A terrarium with a frog and a pool of water
O
B. An aquarium with water plants and a snail
O
C. A terrarium with mice and wood shavings
O
D. An aquarium with fish and plastic plants

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

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