Olaf takes a picture of his dog using a digital camera. Which is true regarding the image of the dog detected by sensors in the camera? It forms where light rays coming from the dog converge.
It can only be seen from the same side of the lens as the dog.
It forms where light rays coming from the camera spread apart.
It can only be seen when the camera lens is very close to the dog.

If a balloon is taken outside on a very cold day, what will occur?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3