Write multiple if statements:

if caryear is before 1967, print "probably has few safety features." (without quotes).

if after 1970, print "probably has head rests.".

if after 1990, print "probably has electronic stability control."

if after 2002, print "probably has airbags.".

end each phrase with period and newline. ex: caryear = 1995 prints:

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.