What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s? 0.5 hz 50 hz 10 hz 200 hz

50 Hz

Explanation:

For those who like equations:

Velocity = frequency × wavelength

For those who like a more intuitive explanation:

Frequency represents how many waves can go through a single point in 1 second. If you have a wave traveling 10 meters per second, and for each wave the length is 0.2 meter, then you know that there are 50 waves stacking together to reach a total length of 10 meters. So, in 1 second, 50 waves can pass, and therefore the answer is 50 Hz

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.