So looking at the problem, you are going to want to start by finding a common denominator (1) in this case: yb, and combining like terms (2). You are then going to want to multiply both sides by (yb) as the reciprocal to the fractions (3).
1) 3x 6g
---- = ---
y b
2) 3xb 6gy
------ = -----
yb yb
3) 3xb 6gy
(yb) ------ = -----
yb yb
which becomes: 3xb = 6gy
So after this, things become much more simple, as all you have to do is isolate the (x), which can be done by dividing the entire equation by (3b).
3xb 6gy
----- = -----
3b 3b
where you will then find your answer of:
2gy
x = ----- (simplified by the GCM of 3)
b
Usually, Scientists use "Parallax Method" in order to determine the different positions of an object
Hope this helps!
Answer:
steam will have the lowest density.
Hope it will help :)
Answer:
When a bullet is fired from a gun, total momentum before is zero since nothing is moving. After firing the bullet there is a momentum in the forward direction. ... The faster an object is moving or the more mass it has, the more momentum it has in the direction of its motion (momentum = mass velocity).
Answer:

Explanation:
given data:
power = 17.7 milliwatt
p = 17.7 *10^{-3} watt
wavelength = 532 nm = 532*10^{-9} m
energy of photon 
h is plank constant = 6.626*10^{-34} JOULE/SEC
C =3*10^8 m/sec

let n is m=number of photon emiited per sec
we knwo that
p = ne

