A 3.50kN piano is lifted by 3 workers at a constant speed to an apartment 25.0m above the street, using a pulley system fastened to the roof of the building. Each worker can deliver 165 W of power, and the pulley system is 75% efficient. Neglecting the mass of the pulley and ropes, find the time for the workers to lift the piano from the street to the apartment window.

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer