Step-by-step explanation:
Given:
Wavelength of wave : 3.3m
Frequency of wave : 100Hz.
speed/velocity : ?
As we know
velocity = wavelength × Frequency
= 3.3 × 100
=330ms−1
So the speed of the wave is 330 ms·¹
Answer:
x= 144
Step-by-step explanation:
the answer written above is 100% WRONG, i looked it up on google and it gave me a straight up answer.
For this case we have to by definition:

Where:
d: It is the density
M: It's the mass
V: It is the volume
According to the data we have to:

On the other hand we have that 1 meter is equivalent to 100 centimeters. Thus the measurements of the walkway are:
600 cm long, 100 cm wide and 10 cm thick. Looking for the volume we have:

According to the formula we have:

Thus, the mass of the walkway is 1,800,000g
Answer:
1,800,000g
Answer:
Will no explain too much in details.
The bottom rectangle has sizes 21cm*9cm, so its area is 189cm^2.
The remaining rectangle has sizes 6cm*7cm(16-9=7cm),so its area is 42cm^2.
The area of the object is 231 cm^2.
The perimeter is 21+9+16+6+(16-9)+(21-6) = 74 cm.
It is 15, as 20 is only a factor of 60 and not 75.