<span>Question No.2
</span>
speed= distance/ time
1200km/0.006s= 200 000 km/s
<span>Question 4
</span>
wavelength = wavespeed / frequency
wavespeed = 16/8 = 2
Question 5
(400/60s) = 6.6667 waves/ sec (Hz).
<span>Velocity = 0.008m/sec. </span>
<span>Wavelength = (v/f) = 0.008/6.6667 = 0.0012 metre (1.2mm).
</span>
To solve this problem you must apply the proccedure shown below:
1. You have that
varies inversely with
and when
the value of
is
.
2. Therefore, you can write the following expression, where
is the constant of proportionality:

3. Solve for the constant of proportionality and substitute the values to calculate it:

4. The equation is:

The answer is: 
Answer:
1.3
Step-by-step explanation:
Answer:
Step-by-step explanation:
(a) 25/400 X 3,875 = $242.19
(b) 50/300 X 96 = 16 lamps
(c) 175/200 X 540.72 = 473.13
(d) 100/300 X 750 = 250 boys
(e) 133/200 X240= 159.6
Answer: 432 ft^2
Step-by-step explanation:
If 1"=3', and the box is 8"x6", then we can simply multiply the 8 and 6 by three. You would get 24 by 18.
Follow this up by the equation a=w*l to get
a=24*18 = 432 ft^2.