Please brainlest due today feel free to get answers online

Studies of sedimentary rocks and fossils have helped scientists understand the history of Earth.

How is geologic time organized on the geologic time scale?

millennia and then smaller periods based on geologic and biologic events that occurred during those times

eras and then smaller periods based on geologic and biologic events that occurred during those times

eras and then smaller millennia based on geologic and biologic events that occurred during those times

periods and then smaller eras based on geologic and biologic events that occurred during those times

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?