Engineering High School

Which of these materials are insulators? Select the THREE (3) that apply.

aluminum can
aluminum can

wool
wool

rubber
rubber

iron nail
iron nail

copper wire
copper wire

plastic

Answers

Answer 1

Answer:

wool, rubber, and plastic

Explanation:

Related Questions

Which of the following is used in the electrical field?

A.wood clamp
B.pliers
C.paper paste
D.none of the above

Answers

Answer:

pliers

Explanation:

because that makes the most sense

. Which of the following formula is used for calculating current:

(A) I=QT
(B) I=WT
(C) I=PT
(D) I=Q/T

Answers

Answer:

I think non of the above because

Explanation:

Current is usually denoted by the symbol I. Ohm's law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm's law is I = V/R.

What Number Am I?
Three is the number of digits you must guess; I'm sure you will, in a minute
less.
The number is a multiple of four, and if you listen, I'll tell you more.
The first digit's more than five, and prime. So pay attention now, just one
more time.
The last two digits' sum is greater than ten; the ones (place value) is greatest
though, and that's the end.
er is:

Answers

Answer:

The number is 768

Explanation:

The given parameters of the three digits number are;

The number is a multiple of four, therefore, a factor of the number = 4

The value of the first digit = A prime number larger than 5

The sum of the last two digits > 10

The value of the ones (place value) digit > The tens (place value) digit

Let 'xyz' represent the digits of the three digits number, we have;

x = A prime number digit larger than 5

∴ x = 7

y + z > 10

z > y and z > x

Given that 4 is a factor of the number, we have;

4 is a factor of 'z'

4 is also a factor of yz

Therefore, the digit, z > 7 and z is divisible by 4, therefore, z = 8

y + z = y + 8 > 10

∴ y > 10 - 8

y > 2

The multiples of 4 larger than 728 with the last digit equal to 8 are found using Microsoft Excel and presented as follows;

748, 768, 788

The numbers that have a larger ones place value are; 748 and 768

The sum of the las two digits are therefore, 4 + 8 = 12 and 6 + 8 = 14

The number that has the largest ones place value for the sum of the last two digits is 768

The number is 768

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