Answer:
25000m/s
Step-by-step explanation:
The following formula is used to calculate the speed or velocity of a wave.
V = f * w
Where V is the velocity (m/s)
f is the frequency (hz)
w is the wavelength (m)
First, determine the frequency.
Calculate the frequency of the wave.
Next, determine the wavelength.
Calculate the wavelength of the wave.
Finally, calculate the wave speed.
Using the formula above, calculate the wave speed.
Answer:
2/3
Step-by-step explanation:
2/15 of 5
Of means multiply
2/15 * 5
Multiply the numerators
2*5 = 10
Put over the denominator
10/15
We can divide the top and bottom by 5
10/5 =2
15/5 =3
2/3
let the short side = x
Long side = 3x
Middle side = 3x -3
x + 3x + 3x -3 = 32
Simplify:
7x -3 = 32
Add 3 to both sides:
7x = 25
Divide both sides by 7:
X = 5
answer: shortest side = 5cm
Answer: 
Step-by-step explanation:
Given
Half life of radioactive substance is 
Initial amount 
Amount left at any time is given by
It takes 26.4 days to reach 2 gm.
There will be 180 mL of water left.
To convert liters to milliliters, multiply by 1000:
0.4(1000) = 400
Each student will use two 5-mL spoons of water; 2(5) = 10 mL each. 10(22) = 220 total mL
400-220 = 180 mL left
