A person uses a lever to lift a barrel. The person applies 175 Newtons of effort force and pushes the end of the lever 0.8 meter. The never exerts 225 newtons of resistance force. It lifts the barrel 0.5 meter. Fine the work output/ work input , and efficiency of the lever

carla slowed down in the beginning of her trip, stopped, and then sped up

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

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