Simon Walters Jr. shares his name with his father. His recent credit report wrongly stated his name as Simon Walters. Anybody checking this report would think that it was his father’s.

Should Simon Jr. be bothered about this mistake? If he wanted to correct the error, what should he do?

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?