PLEASE PLEASE HELP!!

A wave with a wavelength of 2 meters travels at 6 hz. What is its velocity?

3 m/s

4 m/s

8 m/s

12 m/s

One-hundred (100) wavelengths pass every 5 seconds. What is the frequency of the wave?

1 Hz

20 Hz

500 Hz

It cannot be determined.

Explanation:

(1) We have,

Wavelength of a wave is 2 meters

Frequency of a wave is 6 Hz

It is required to find the velocity of a wave. The velocity of a wave is given by :

So, the velocity of a wave is 12 m/s.

(2)

Number of waves passing are 100

Time taken to pass the wave is 5 seconds

The frequency of wave is given by total number of waves passing per unit time. So,

Frequency of a wave is 20 Hz.

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

answer: i don't know the answer good luck

explanation: