Answer:
Given
mass (m) =2kg
velocity (v) =3m/s
momentum (p) =?
Form
p=mv
2kgx3m/s
p=6kg.m/s
the momentum of ball's =6kg.m/s
Answer:
Magnesium and Bromine
Explanation:
I just took the test, and Magnesium has 7 electrons and Bromine has 2 valance electrons making the transfer a lot easier. In the first choice, Krypton already has 8 valance electrons therefore it cannot transfer or accept any more which rules it out as a possible answer. Calcium has 2 valance electrons and Potassium has 1 meaning it couldn't make a full shell of 8 and cannot make a ionic bond. Iodine has 7 electrons as well as Chlorine which wouldn't be the answer because it would have more than 8 valance electrons.
An atom would be your answer, so B!
Answer:
374 N
Explanation:
N = normal force acting on the skier
m = mass of the skier = 82.5
From the force diagram, force equation perpendicular to the slope is given as
N = mg Cos18.7
μ = Coefficient of friction = 0.150
frictional force is given as
f = μN
f = μmg Cos18.7
F = force applied by the rope
Force equation parallel to the slope is given as
F - f - mg Sin18.7 = 0
F - μmg Cos18.7 - mg Sin18.7 = 0
F = μmg Cos18.7 + mg Sin18.7
F = (0.150 x 82.5 x 9.8) Cos18.7 + (82.5 x 9.8) Sin18.7
F = 374 N
Answer:
The intensity of the electric field is
![|E|=10654.37 \:N/C](https://tex.z-dn.net/?f=%7CE%7C%3D10654.37%20%5C%3AN%2FC)
Explanation:
The electric field equation is given by:
![|E|=k\frac{q}{d^{2}}](https://tex.z-dn.net/?f=%7CE%7C%3Dk%5Cfrac%7Bq%7D%7Bd%5E%7B2%7D%7D)
Where:
- k is the Coulomb constant
- q is the charge at 0.4100 m from the balloon
- d is the distance from the charge to the balloon
As we need to find the electric field at the location of the balloon, we just need the charge equal to 1.99*10⁻⁷ C.
Then, let's use the equation written above.
![|E|=(9*10^{9})\frac{1.99*10^{-7}}{0.41^{2}}](https://tex.z-dn.net/?f=%7CE%7C%3D%289%2A10%5E%7B9%7D%29%5Cfrac%7B1.99%2A10%5E%7B-7%7D%7D%7B0.41%5E%7B2%7D%7D)
![|E|=10654.37 \:N/C](https://tex.z-dn.net/?f=%7CE%7C%3D10654.37%20%5C%3AN%2FC)
I hope it helps you!