Answer: (3,8)
*** ask if need explantion
Answer:
Step-by-step explanation:
Parameters given:
Point charge at the center of the sphere, : μC
Charge of the sphere, : μC
Distance between and the point of consideration =
Distance between and the point of consideration =
Electric field is given as
where
k = Coulombs constant;
q = electric charge;
r = distance between charge and point of consideration.
The net electric field at that point is the sum of the electric field due to and , i.e.:
Since k is the same and the distance, r is also the same, then:
=>
=>
The electric field along the x axis,
Using the concept of probability and the arrangements formula, there is a
0.002 = 0.2% probability that the first 8 people in line are teachers.
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- A probability is the <u>number of desired outcomes divided by the number of total outcomes.</u>
- The order in which they are positioned is important, and all people will be positioned, and thus, the arrangements formula is used to find the number of outcomes.
The number of possible arrangements from a set of n elements is given by:
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The desired outcomes are:
- First 8 people are teachers, in <u>8! possible ways.</u>
- Last 4 are students, in <u>4! possible ways.</u>
Thus,
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For the total outcomes, <u>number of arrangements of 12 people</u>, thus:
The probability is:
0.002 = 0.2% probability that the first 8 people in line are teachers.
A similar problem is given at brainly.com/question/24650047
Answer:
i think it would be A
Step-by-step explanation:
Rhombus , 4 sides are equal
so
AB = √(15^2 +20^2)
AB = √(225 + 400)
AB = √625
AB = 25
P = 4a
P = 4(25)
P = 100
answer
H. 100 in