In casting experiments performed using a certain alloy and type of sand mould, it took 155 sec for a cube-shaped casting to solidify. The cube was 50 mm on a side. Find out the value of the mould constant (in sec/mm2 unit) using chvorinov's rule.

Alaser tag arena sells two types of memberships. one package costs $325 for one year of membership with an unlimited number of visits. the second package has $125 enrollment fee, includes five free visits, and costs and additional $8 per visit after the first five. how many visits would a person need to use for each type of membership to cost the same amount over a one-year period?

Which best describes standard precautions?

Given: m∠apc = 27°, m dc = 27° find: m ab