PLZ HELP I WILL GIVE BRAINLIESTWhich of the following statements is true? The ratio of work output to work input is always less than one. Only a few machines are 100 percent efficient. Efficiency is calculated by multiplying work input and work output. Some machines are frictionless.

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

Actual age your first developed of age well comparison age refers to absolute age true or false

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?