Answer:
A
Explanation: I agree with A
Answer:
Explanation:
From the question we are told that
Distance 
Time 
Time 
Generally the the equation for the distance traveled is mathematically given as
Generally equation for speed of side walk is mathematically given as
Answer:
Explanation:
wavelength of sound = velocity / frequency
= 340 / 780
= .4359 m
Let the observer be at equal distance d from in phase source .
let it moves by distance x for destructive interference .
path difference from source
= d + x - (d - x )
= 2x
for destructive interference
path difference = wave length / 2
2x = .4359 / 2 m
x = .4359 / 4
= .108975 m
10.9 cm
so observer must move by distance 10.9 cm towards on of the centers.
B. Starting with most recent
<span>Flashlight should be carried to help avoid a collision, when paddling a canoe at night.
There are some rules and skills for paddling a canoe. So, before paddling you should know everything about it. Canoeing is not easy as it looks and not everyone can paddle a canoe. A strong stroke is a fundamental rule of Canoeing.</span>
