If the efficiency and mechanical advantage of a certain machine are given as 65 % and 3 respectively. What is the velocity ratio of the machine? a.3.5 %
b.4.6 %
c.7.9 %
d.11.2 %

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?