PLS ANSWER FAST WILL GIVE!! explain at least one way that engineers and scientists work to prevent coastal erosion. In your explanation be sure to explain what the method of prevention is, and how it works. Use academic vocabulary, but be sure to write in your own words. Also, can you explain where it is being used, and whether or not it is effective?

Hard engineering is a coastal management technique used to protect coasts,by absorbing the energy of waves, preventing erosion and flooding. They are highly visible man-made structures used to stop or disrupt natural processes.

Regards,

Astrix <3

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