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 %

Jason and alejandro lift a chair 2 meters into the moving truck using 150 newtons of force. it takes them 3 seconds to lift the chair how much power did they use

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?