If you do 1,200 J of work and a lever does 900 J of work, what is the efficiency of the lever?

Is the idea of containment relevant to american foreign and policy today why or why not

Whose writings were the source of the idea that people have a right to abolish and replace a government that violates their natural rights?

Which of these actions were taken by the us government to get ready for war? check all that apply. using a draft to build armed forces planting victory gardens for food and to boost morale promoting conservation of key products trying to get people to buy liberty bonds taking new jobs to meet demands promoting patriotism