Free ions. Negative ions have one extra electron, positive ions are missing an electron. Negative ions give up their extra electron easily. I hope my answer has come to your help. God bless and have a nice day ahead! Feel free to ask more questions.
Answer:
0.66 m/s²
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 0
Final velocity (v) = 5.4 m/s
Time (t) = 8.2 secs
Acceleration (a) =....?
The acceleration of the dog can be obtained as follow:
v = u + at
5.4 = 0 + a × 8.2
5.4 = 8.2a
Divide both side 8.2
a = 5.4/8.2
a = 0.66 m/s²
Therefore, the acceleration of the dog is 0.66 m/s².
The Bohr's proposal for the angular momentum of an electron in Bohr's model of the hydrogen atom is:
L=(n*h)/(2π), where n is the number of the energy level and h is the Planck's constant. This equation shows us the quantization of angular momentum of the electron. So the correct answer is the second one: Planck's constant.
Pressure is define as force per unit area. Mathematically expressed as,
P=F/A.
We are given, a mass of the ball equal to
m=1.6kg and an Area of 1.1cm2=1.1(
)m2
To calculate for the force exerted by the finger to the ball, it is simply equal to the weight of the ball. Mathematically,
F=W
Weight of the ball can be calculated as,
W= ma
where m=mass of the object and a is the acceleration due to gravity (9.8m/s).
Then, the Weight of the ball which is equalt to the force exerted by the finger,
W=F=(1.6 kg x 9.81)=15.696 N
Then Pressure would be,
P=(15.696N/1.1(.1(
)m2))
P=
142690.91 N/m2=142690.91 Pa