Show that in metal cutting when the normal rake angle is zero, the ratio of the shear strength of the work material ts to the specific cutting pressure ps is given by (a) ps ? is the coefficient of friction at the tool/chip interface, and rc is the cutting ratio (chip ratio) where (b) show that when cutting metal orthogonally with a tool of zero rake angle, the rate of heaft generation,

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1.c

2.a

3.d

for this case, we must find the number of deaths per day of the year 2015, in automobile accidents, knowing that 32,400 people died.

knowing that the year 2015 had 365 days we have the following division:

where "x" represents the number of deaths per day.

rounding off we have:

approximately, 89 people per day died in 2015

answer:

89 people per day