A cylindrical rod of length 12 cm and diameter 2.0 cm will just barely float in water of density 1000 kg/m3. What is its mass?
A) 75 g B) 150 g C) 38 g D) 300 g
Question 2
An important part of the history of our understanding of the atmospheric ozone layer was
A) satellite measurements that showed a dangerous build-up of ozone all over Earth.
B) the discovery by Rowland and Molina that jet airplane exhaust is contributing to the greenhouse effect.
C) the discovery by Susan Solomon that jet airplane exhaust is contributing to the greenhouse effect.
D) the discovery by Rowland and Molina of a large ozone depletion over Antarctica.
E) the discovery by Susan Solomon of a large ozone depletion over Antarctica.
Plains zebra are highly dependent on water.
Turn on water
A single overhead camshaft engine with a timing belt that also rotates the water pump.
Water resources
Physics - Density and Pressure