g A block of mass 0.42 kilogram is initially at rest at the top of a frictionless ramp that has a surface length of 1.3 meters and is inclined by 12 degrees above horizontal. The block slides down and impacts a spring with spring constant k, causing the spring to compress by 0.41 meters when the block comes to a rest. What is the value of the spring constant in units of Newton/meter

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

What happens when the number of protons in an atom changes

Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the