Aperson covers a distance of 320 miles in a travel time of 8 hours. what is the speed for this trip?
a. 40 mi/hr
b. 20 mi/hr
c. 35 mi/hr
d. 15 mi/hr

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.