Aworker pushed a 33 kg block 6.1 m along a level floor at constant speed with a force directed 23° below the horizontal. if the coefficient of kinetic friction between block and floor was 0.20, what were (a) the work done by the worker's force and (b) the increase in thermal energy of the block-floor system?
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Physics, 21.06.2019 23:20
Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity
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The amount of potential energy possessed by an elevated object is equal to what?
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Physics, 22.06.2019 21:20
Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?
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Physics, 22.06.2019 21:30
Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.
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Aworker pushed a 33 kg block 6.1 m along a level floor at constant speed with a force directed 23° b...
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