Ice age sea level change:  Recall that sea level is where th…

Ice age sea level change:  Recall that sea level is where the top surface of the ocean meets the land.  It is affected by the height of the ocean and by the height of the land.  Either one can move up or down. a) What is one major reason why global sea level (eustatic sea level) changes between glacial and interglacial periods? b) Why do glaciers/ ice fields cause sea level to change by different amounts (tens to hundreds of meters) in some regions compared with others? bonus) what is a second major reason why global sea level changes between glacial and interglacial periods?

A block is pulled up a slope by a force Fp = 56 N (parallel…

A block is pulled up a slope by a force Fp = 56 N (parallel to the slope) as shown in the figure below. The mass of the block is 8.0 kg.  The slope makes an angle of 20° with the horizontal ground. The coefficients of kinetic and static friction between the box and the slope are μk = 0.20 and μs = 0.30, respectively. What is the net work done by all forces acting on the block if it moves a distance of 0.40 m up the slope? 

Satellites orbiting the Earth: (a)  Describe one reason why…

Satellites orbiting the Earth: (a)  Describe one reason why satellite surveys are better than a specific method (state the method) for studying the ocean.  1.  (b)  Describe one major disadvantage of satellite surveys for studying the ocean, that is related to electromagnetic radiation. 1.  (c)  Why would I want to go out to sea on a ship and measure chlorophyll when I can obtain surface concentrations by satellite? 1.