The international space station is in a 250-mile-high orbit. What are the station’s orbitalperiod, in minutes, and speed? ( The mass of earth is 5.98x1024 kg and a radius of6.37x106m)

Identify two factors that determine the rate of stream erosion

What are similarities and differences of reflection, refraction, diffraction and absorption?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)