Which of the following is an example of weathering, but not of erosion?
a. wind blows sand down a beach
b. freezing water breaks apart a rock
c. small rocks slide down a hill
d. a river carries sediment to the ocean

the force on the thing and the distance the force moves the thing

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