Question1

A blocks slides all along a track that descends through distance h. The track is frictionless except for the lower section. There block slides to a stop in an assured distance D because of friction.

(a) If we decrease h, will the block now slide to a stop in a distance that is greater than, less than, or identical to D?

(b) If, in-stead, we increase the mass of the block, will the stopping distance now be greater than, less than, or identical to D?

Question2

A point charge q1=4.00 nC is located on the x-axis=2.00m.A second point charge,q2=-6.00 nC is on y-axis at y=1.00m. What is the total flux because of these two point charges through a spherical surface centered at the origin and with a radius of?

a)0.500m,

b)1.50m and

c) 2.50m.