Which sequence is correct when ordered by increasing size? a. earth, milky way galaxy, solar system, galaxy clusters b. earth, solar system, milky way galaxy, clusters of galaxies c. solar system, earth, galaxy clusters, milky way galaxy d. galaxy clusters, solar system, milky way galaxy, earth?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

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

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3