Wave speed = (frequency) x (wavelength)
= (5 / second) x (30 mm)
= 150 mm/second = 0.15 meter/second .
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If the radius of a circle of area A and circumference C is doubled, <u>the new circumference</u> of the circle, in terms of C, <u>will be</u> equal to 2C.
The area (A) of a circle is given by:
(1)
And a circumference (C) is:
(2)
Where:
r: is the radius
<u>If the radius</u> of a circle and circumference <u>is doubled</u>, the new circumference of the circle is:

Therefore, the new circumference of the circle in terms of C is equal to 2C.
To find more about circumference, go here: brainly.com/question/4268218?referrer=searchResults
I hope it helps you!
Answer:
none of the answers is correct, the time is the same t₁ = t₂ = 0.600 s
Explanation:
This is a kinematics exercise, analyze the situation a bit. The vertical speed in both cases is the same is zero, the horizontal speed in the second case is double (vₓ₂ = 2 vₓ₁)
let's find the time to hit the ground
y = y₀ + I go t - ½ g t²
0 = y₀ - ½ g t²
t = √ 2y₀ / g
with the data from the first launch
y₀i = ½ g t²
y₀ = ½ 9.8 0.6²
y₀ = 1,764 m
with this is the same height the time to descend in the second case is the same
t₂ = 0.600 s
this is because the horizontal velocity change changes the offset on the x axis, but does not affect the offset on the y axis
Therefore, none of the answers is correct, the time is the same
t₁ = t₂ = 0.600 s
Answer: The correct answer is 1800 meters
Explanation: The velocity is equal to distance over time. Thus the formula for distance is d=vt
And 1minute = 60 seconds
d= 30m/s×60s
d= 1800m