(Assume no friction in this problem.) A 85 kg skateboarder coasts down a hill that is 5m tall. At the bottom of the hill, he has a choice of two ramps. The first is 7m tall with a slope of 15 degrees and
the second is 12m tall with a slope of 10 degrees. He believes he will coast to a higher point on the
second hill since he climbs quicker on a steeper hill. Is he right? Why or why not?

Apoint charge +q is at the origin. a spherical gaussian surface centered at the origin encloses +q. so does a cubical surface centered at the origin and with edges parallel to the axes. select "true" or "false" for each statement below. the electric flux through the spherical surface is greater than that through the cubical surface. suppose (for this statement only), that q is moved from the origin but is still within both the surfaces. the flux through both surfaces remains unchanged. the area vector and the e-field vector point in the same direction for all points on the spherical surface. the e-field at all points on the spherical surface is equal due to spherical symmetry. the flux through the spherical gaussian surface is independent of its radius.