. While at the dentist’s office, Marion noticed the x-ray images of her teeth looked very different than a photograph image of her teeth. She recalled x-ray images are
produced from x-rays and photograph images are produced from visible light waves.
What can be inferred about the energy difference between x-rays and visible light
waves?
A. X-rays have higher energy than visible light waves.
B. Visible light waves have higher energy than x-rays.
C. X-rays and visible light waves have the same energy.
D. Visible light waves and x-rays can have varying amounts of energy

Jason and mia are both running in a race. as they approach the finish line, you being the physicist that you are decide to time how long it takes them to reach the end of the race. when you start your stop watch (you can take this as time t = 0 s) you notice that mia is an unknown distance d ahead of jason and both are moving with the same initial velocity v_0. you also notice that jason is accelerating at a constant rate of a_j, while mia is deaccelerating at a constant rate of -a_m. jason and mia meet each other for the first time at time t = t_1. at this time (t = t_1) jason's velocity is two times that of mia's velocity, meaning v_j (t_1) = 2v_m (t_1). a) draw the position vs. time graph describing mia's and jason's motion from time t = 0 to time t = t_1. clearly label your axes and initial conditions on your graph. b) draw the velocity vs. time graph describing mia and jason's motion from time t = 0s to time t = t_1. clearly label your axes and initial conditions on your graph. c) how long from when the stop watch was started at t = 0s did it take mia and jason to meet? express your answer in terms of know quantities v_0, a_m, and a_j. d) when the stop watch started at time t = 0s, how far apart, d, were mia and jason? express your answer in terms of know quantities v_0, a_m, and a_j.

What does si stand for,when referring to a system of measurement

The radius of an atom is closest in size to a