Aball attached to a string of 2m is raised to an angle of 38 degrees below the horizontal and then released. a) what is the expected velocity of the ball when it reaches the bottom of its swing, neglecting air resistance?
b) it was measured that the actual velocity was 3.0 m/s. what was the work done by air resistance if the mass of the ball is 0.5 kg?

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