The seasons on earth are created by all of the following except:
c. mountain winds
Answer:
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.The magnitude of the net force acting on an object is equal to the mass of the object multiplied by the acceleration of the object as shown in the formula below. If the net force acting on an object is zero, then the object is not accelerating and is in a state that we call equilibrium.Jan 4, 2016
Explanation:
Okay.
So the reason why a certain material would break upon impact is (to really, really dumb it down to save space) because the material is rigid, and not flexible.
So things like glass and hard plastic are not good choices if you want a shatter-resistant container.
Things like Metals are malleable, that means that it can be hammered into thin sheets. Metals are softer and more flexible than materials like glass or hard plastic, so the worst thing that could happen to a metal container when dropped is getting dented, but it won't shatter.
As for where the metals are on a periodic table, take this paragraph from "Chemistry for Dummies":
"<span>In the periodic table, you can see a stair-stepped line starting at Boron (B), atomic number 5, and going all the way down to Polonium (Po), atomic number 84. Except for Germanium (Ge) and Antimony (Sb), all the elements to the left of that line can be classified as </span>metals<span>."</span>
For this case we have that by definition, the momentum is given by the following formula:
Where:
v: is the velocity
m: is the mass
According to the statement we have:
Substituting:
ANswer:
Answer:
Net force = 13.36 N
Explanation:
Recall the formula for the force between two charges q1 ans q2 separated a distance "d" based on Coulomb's Law:
so, we need to calculate the force exerted on the charge 10 micro Coulombs by the 20 micro-Coulombs charge as they are separated 0.8 meters (haf the distance of the original two charges.
Notice that charges q1 and q3 are both positive charges so the force we obtain will be pointing in the direction towards charge q2. The magnitude of this is:
We can calculate now the force exerted by charge q2 on charge q3 using the same reasoning, and noticing that since charge q2 is negative, the force on q3 will be of attraction, then also pointing in the direction towards q2:
Now, we need to add both forces to get the final force (recall they are both in the same direction):
Net force = 10.547 N + 2.813 N = 13.36 N