【简答题】An object in harmonic motion has amplitude 8.0 cm and frequency 0.50 Hz. At t = 0 s it has its most negative position. Write the function x ( t ) that describes the object’s position.
【简答题】Seeing in Stereo (立体) You have two eyes and they are set close together on the front of your face . Have you wondered why ? The reasons are and important to the way you see the rest of your wor...