Use this illustration to answer the question.
2. the figure above shows two pith balls suspended by threads from a support. in the figure,
a. the pith balls are uncharged.
b. pith ball 1 is negatively charged, and pith ball 2 is positively charged.
c. pith balls 1 and 2 have the same charge.
d. pith ball 1 is positively charged, and pith ball 2 is negatively charged.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.