Hi, i'm new here! i need , i will give points! a force of 13 n is applied to the handle of a screwdriver being used to pry off the lid of a
paint can. as the input force moves through a distance of 0.25 m, the screwdriver does 2
j of work on the lid. what is the efficiency of the screwdriver? show your work.
you pull the rope of a pulley 8 meters to lift the box on the other end a distance of 2
meters. what is the ideal mechanical advantage of the pulley system? show your work.
a pot of water has a mass of 950g. the specific heat of water is 4.18 j/kg•℃. how much
heat must be absorbed to raise the temperature of the water from 28℃ to 85℃? show
your work.
Answers: 3
Biology, 21.06.2019 18:30
Astudent conducts an experiment to determine how the amount of water given to a plant affects it growth what is the dependent variable for this experiment
Answers: 1
Biology, 21.06.2019 22:00
Explain why phospholipid molecules form a bilayer. (3 marks)
Answers: 1
Biology, 22.06.2019 02:00
Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.
Answers: 3
Hi, i'm new here! i need , i will give points! a force of 13 n is applied to the handle of a screw...
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