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What is an F2 tornado?
F2 is a rating on the Fujita scale, which assess tornado intensity based on damage. The scale runs from F0 at the weakest to F5 at the strongest. F2 indicates a strong tornado (most tornadoes are F0 or F1) that can tear the roof from a well-built house and lift cars off the ground.
Can an F2 tornado tear apart trees and buildings?
Trees can be largely torn apart by an F2 tornado but most buildings will remain standing. An F2 tornado will remove the roof from a typical frame house but leave most walls standing. Weak structures such as mobile homes, barns, and garages will likely be destroyed.
What acceleration occurs if thefriction force is 4 N?
m=4.5kg f1=5.9N theta=43 degrees f2=3.7N (f1)cos43+f2----->7.4299/ 4.5------->1.7m/s^2 or 1.8m/s^2
If two forces are acting on the same object in the same direction how would you figure out the net force?
Drawing a free body diagram, the forces you care for are the ones in the same direction. Now drawing a vector addition diagram, we know that the first force vector plus the second force vecotr equals the resultant force vector. Therefore, the net force is equal to the value of the first force plus the value of the second force.
Why is it easier to change the motion of an object with a small mass than it is to change the motion of an object with a large mass?
F=mxa, m = can be small or large, a = change the motion (acceleration), F = the cause of the change the motion F1 changes the motion of m1 at a F2 changes the motion of m2 at a (same force, same size mass) (F1+F2) changes the motion of (m1 +m2) at a So it takes twice the force (F1+F2) to move twice the mass (m1 + m2) at the same change in motion (acceleration). If (F1 + F2) were to move smaller mass (m1) the acceleration would be larger. The "why" is hidden in the formula.
What has an enthalpy change that is numerically opposite to the lattice energy of CaF2?
Of these choices:a. Ca(s) + F2(g) → CaF2(s)b. Ca(g) + F2(g) → CaF2(s)c. Ca2+(g) + 2F−(g) → CaF2(s)d. Ca(g) + 2F(g) → CaF2(s)
How do you Balance CaBr2 plus F2 - CaF2 plus br2?
Its already balanced.
What type of reaction is CaCl2 plus F2--CaF2 plus Cl2?
Single replacement.
How many moles of Ca are there in 0.18moles of Ca F2?
There are 0.18 moles of Ca2+ ions in 0.18 moles of CaF2.
What is the chemical formula for calcium and fluorine?
Fluorine, the element has a symbol/"formula" F. As a charged ion it has a -1 charge = F- Otherwise, fluorine is a diatomic molecule= F2 Calcium is also an element with symbol/"formula" Ca. As an ion it has a +2 charge, so it can be written as Ca2+.
Arrange F2 F2- and F2 plus in order of decreasing stability?
F2+ most stable>f2>f2-
Simplify ff plus f plus fff plus f?
Denoting ff as f2 etc, f2 + f + f3 + f = f3 + f2 + 2f
How do you balance BrCl --- Cl2 plus Br2?
Ca + Cl2 ----> CaCl Step 1) Ca + Cl2 ----> 2 CaCl There are 2 Cl's on the reaction side so you need 2 on the Product side Step 2) 2Ca + Cl2 ----> 2 CaCl There are now 2 Ca on the product side and you need 2 on the reactant side Voila!
What type of reaction is HCl plus F2-HF plus Cl2?
Single replacement. The F2 replaces Cl to form HF and Cl2.
What is isostructuralism?
Same structure but different composition ex. Ca F2 - BaCl2
Is F2 plus 2 more stable than F2-2?
yes, because it stinks! LOL haha
F2 plus H2O yields HF plus O2?
2f2+2h2o>>4hf+o2
