Julie walked to her friend's house to spend the afternoon. she walked at 4 mph. when she went home, she ran at 6 mph so she wouldn't be late. what is true about her average speed and average velocity? aher average speed is smaller than her average velocity bher average speed and her average velocity are the samecher average speed is 0, but her velocity is notdher average speed is grater than her average velocity

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

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?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e