Work output of a machine is always less that the work input due too

A goose waddles 18.0 m north and then 5.00 m east. He then walks 2.00 m south and 2.00 m west. What is the magnitude and direction of his displacement?

What does a force moving an object through a distance transfer? A. sound B. energy C. weight D. mass

Two astronauts, one of mass 60 kg and the other 90 kg, are initially at rest together in outer space. they then push each other apart. how far apart are they when the lighter astronaut has moved 15 m?

How is psychology considered a science

Steve and Carl are driving from Scranton to Bridgeport, a distance of 180 miles. If their speed averages 60 miles an hour, how long will it take them to get there? A. 3.5 hours B. 3 hours C. 2.5 hours D. 4 hours

Objects falling through the air experience a type of friction called air resistance. true or false

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters

Imagine you are in a music concert. What different sounds might you hear? How are these sounds made?

Dose aloe Vera grow in the mesa?

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.