A shopping cart is initially at rest when it undergoes a constant acceleration. After 3.0 s, the cart has undergone a displacement of 15 m. What is the cart's
acceleration?

A.3.3 m/s2
B.0.83 m/s2
C.2.2 m/s2
D.68 m/s2

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Select all the correct answers. which three statements about electromagnetic radiation are true?