Kim is a forensic scientist. she has been asked to identify a chemical compound that was found at the scene of a crime. which of these pairs of properties would be most in identifying the unknown compound?

a) color, mass

b) boiling point, volume

c) flammability, volume

d) melting point, reactivity with water

plz answer this question quickly, it’s really important

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.