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likoan [24]
2 years ago
9

The adjustable contact of a potentiometer is placed at the center of its adjustment. If the total resistance is 5 kOhms, what is

the resistance between each end terminal and the adjustable contact? (Help by explaining please?)

Computers and Technology
1 answer:
irakobra [83]2 years ago
4 0
Potentiometer, is a measuring instrument which is used to measure electric potential or we can say voltage. It is also act as a voltage divider.
It is a three terminal resistor, if only two terminals are used than it acts as a variable resistor or rheostat. If the contact is placed at the center of its adjustment and the total resistance is 5KOhms, the resistance between each end terminal and adjustable contact is 1/2 x 5 = 2.5kohms because the resistance from either end is equal and equal to half the end to end resistance.
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Write a program to sort the (name, age, score) tuples by descending order where name is string, age and score are numbers. The s
zimovet [89]

Answer:

The program in Python is as follows:

from operator import itemgetter

m = int(input("Number of records: "))

print("Name, Age, Score")

my_list =[]

for i in range(m):

   user_details = input()

   my_list.append(tuple((user_details.split(","))))

my_list.sort(key =  itemgetter(0, 1, 2))        

print("Sorted: ", my_list)

Explanation:

This imports the operator function from itemgetter

from operator import itemgetter

This gets the number of records, m

m = int(input("Number of records: "))

This prints the format of input

print("Name, Age, Score")

This initializes the list of tuples

my_list =[]

This iterates through m

for i in range(m):

This gets the details of each person

   user_details = input()

This appends the details to the tuple

   my_list.append(tuple((user_details.split(","))))

This sorts the tuple

my_list.sort(key =  itemgetter(0, 1, 2))        

This prints the sorted tuple

print("Sorted: ", my_list)

6 0
2 years ago
How to delete the last element in array
svlad2 [7]

Answer:

Hey mate.....

Explanation:

This is ur answer.....

<em>To remove the last n elements from an array, use arr. splice(-n) (note the "p" in "splice"). The return value will be a new array containing the removed elements.</em>

<em />

Hope it helps!

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Answer:

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Nat2105 [25]

Answer and Explanation:

Given that total number of records in a file = 100000

Each record consists of= 240 bytes

Given that B= 2400 bytes.

Then total blocks in file = 100000 records * 240 / 2400

= 10000 blocks.

Time that will take for exhaustive read

= s + r + b.btt

= 16 + 8.3 + (10000) * 0.8

= 8024.3 msec

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Hence, X (s + r + btt) > 8024.3

X (16+8.3+0.8) > 8024.3

X > 8024.3/25.1

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3 years ago
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mihalych1998 [28]

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