Physics, 05.02.2021 19:00, mariahcid904
Mr. Draper asks his class to design a system of gears, strings, and pulleys that will allow him to pull back the classroom's curtains simply by turning a crank at his desk. The system must be built within the following constraints: It must be made only out of metal gears, metal pulleys, string, and one crank. It must be strong enough to move the curtains. It cannot be in the way of students or their desks. It must take no more than one day to build. The final design will use which type of energy to perform work on the curtains? A. elastic potential energy B. thermal energy C. gravitational potential energy D. kinetic energy
Answers: 1
Physics, 21.06.2019 23:30, ladawnrowles005
Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?
Answers: 3
Physics, 22.06.2019 06:00, nicollexo21
Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
Answers: 1
Physics, 22.06.2019 07:00, dsperez201938
We put a force of 50n on an object and the acceleration is 100 m/sĀ². what is the mass of the object?
Answers: 1
Mr. Draper asks his class to design a system of gears, strings, and pulleys that will allow him to p...
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