Question

You send a flash of light toward the Moon. It bounces off a mirro measure the time between when you sent the flash and when it returns to you and find that the whole process took 2.0 seconds. The distance to the Moon is (state vour answer in kilometers and list the answer with at least three significant figures.) You can use 3x108 m/s as the speed of light (feel free to google this quantity to verify). a r and returns to you , You You use a pinhole camera to take a picture of a small tree. The tree is 7.6 meters away from the camera and the tree is 2.5 meters high. Your pinhole camera is a cubical box that is 13 centimeters deep from the pinhole and 13 centimeters high and wide. The image of the tree in the pinhole camera is upside down. For a pinhole camera, the ratio of the size of an object to the distance from the object to the camera must be equal to the ratio of the size of the pinhole image to the depth of the pinhole camera Use the relationship above to determine the size of the tree's image in centimeters to one decimal place accuracy. b

Answer 1