Chang sees the following formula on a website about
what does the symbol ef in the formula indicate that chang
needs to do?
he needs to find the net force acting on the object in a
direction.
he needs to use only forces acting in the direction of
motion.
he needs to combine the horizontal and vertical forces.
he needs to multiply the horizontal and vertical forces.

How does convection affect our atmosphere? our layers of earth? our oceans?

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 (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

A: all waves on the electromagnetic spectrum travel at the same speed in a vacuum. the speed of these waves in a vacuum is 3x108 m/s. as the wavelength of a wave doubles, how does the speed and frequency of the wave change?