If you find that the hydrogen alpha line in a star's spectrum occurs at a wavelength of 656.45 nm, what is the star's approximate radial velocity? Note that the rest wavelength of this line is 656.30 nm. A. 70 km/s toward you B. 150 km/s away from you

Explain the significance of turning points.

Semi trailer trucks have an odometer on one hub of a trailer bill the hub is weighted so that it does not rotate but it contains gears to count the number of wheel revolutions then calculates the distance travelled if the wheel has a 1.08 M diameter and goes through a 150,000 rotations how many kilometres should the odometer read?

9 - A tire with a radius of 0.5 m rotates at a constant speed of 200 rpm. Find the acceleration of a small stone on the outer edge of the tire.    a) 219 m/s^2  B) 312 m/s^2  NS) 102 m/s^2  D) 153 m/s^2  TO) 187 m/s^2