Answer:
Weight=686.7N, , S.G.=0.933, F=17.5N
Explanation:
So, the first value the problem is asking us for is the weight of methanol. (This is supposing there is a mass of methanol of 70kg inside the tank). We can find this by using the formula:
W=mg
so we can substitute the data the problem provided us with to get:
which yields:
W=686.7N
Next, we need to find the density of methanol, which can be found by using the following formula:
we know the volume of methanol is 75L, so we can convert that to like this:
so we can now use the density formula to find our the methanol's density, so we get:
Next, we can us these values to find the specific gravity of methanol by using the formula:
when substituting the known values we get:
so:
S.G.=0.933
We can now find the force it takes to accelerate this tank linearly at
F=ma
F=17.5N
I think that would be a isthmus
Answer:
Seahawks
Explanation:
THEY ARE THE BEST TEAM!!!
They have a charge of zero because every atom starts of with the same number of electrons (which are negative) and protons(which are positive.)
These happens in till bonding happens, but the bond itself is zero. Zero just means that the bond has the same amount of positive and negative.
Answer:
n = 223 revolutions
Explanation:
It is given that,
The angular acceleration of a helicopter blade,
Initial speed of the helicopter blade,
The final speed of the blade,
We need to find the number of revolutions. Firstly we will find the angle turned by the blade. Let the angle is . So,
Let there are n number of revolutions made by the blade. So,
or
n = 223 rev
So, there are 223 revolutions.