21. What is the most likely outcome of decreasing the frequency of incident light on a diffraction grating? A. lines become narrower
B. distance between lines increases
C. lines become thicker
D. distance between lines decreases

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

True or false graphs must include scales that increase by the same amount