Amass weighing 16 pounds stretches a spring 6 inches and another spring 2 inches. the two springs are then attached in parallel to a common rigid support. find the equation of motion if the mass is initially released from the equilibrium position with a downward velocity of 2 ft/s.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?