Which of these best orders the rock layers from the youngest to the oldest? (1 point)
1) layer a - layer b - layer c → layer d
2) layer a - layer d - layer b - layer c
3) layer d - layer c - layer b - layer a
layer d - layer a - layer c → layer b

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.