A car drives at a constant speed of 3 m/s around a circle with radius 20 m. What is the centripetal acceleration of the car? A. 9.2 m/s2 B. 0.45 m/s2 C.0.15 m/s2 D. 6.7 m/s2​

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

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?