Physics, 02.10.2019 13:30 fatimababy
You push a box across the floor with a force of 30 n. you push it 15 meters in 8 seconds. how much work did you do? how much power did you use?
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Physics, 22.06.2019 02:30
Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic
Answers: 1
Physics, 22.06.2019 05:00
Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?
Answers: 1
Physics, 22.06.2019 05:50
Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?
Answers: 3
Physics, 22.06.2019 11:00
Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?
Answers: 2
You push a box across the floor with a force of 30 n. you push it 15 meters in 8 seconds. how much w...
History, 24.07.2019 01:30
History, 24.07.2019 01:30
History, 24.07.2019 01:30
Health, 24.07.2019 01:30
Health, 24.07.2019 01:30
Health, 24.07.2019 01:30
Health, 24.07.2019 01:30
Health, 24.07.2019 01:30