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Montano1993 [528]
3 years ago
14

4. Explain why the melting point is difficult to measure.​

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

Heating sample too rapidly may cause the thermometer reading to differ from the actual temperature of the heat source. Why is a finely powdered sample used in a melting point measurement? Particles may not pack well.

Step-by-step explanation:

I had An assignment question like this

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11. The length of a rectangle is three times its width. The perimeter of the
Elenna [48]

Answer: The length of the rectangle is 37.5 inches and the width is 12.5 inches

Step-by-step explanation: The dimensions of the rectangle is not given but we have clues given. The length is given as three times it’s width which means if the width is W, then the length would be given as 3W (three times the width). Also the perimeter is given as 100 inches and the formula for the perimeter is;

Perimeter = 2(L + W)

We can now insert the known values as follows;

100 = 2(3W + W)

100 = 2(4W)

100 = 8W

Divide both sides of the equation by 8

12.5 = W

Having calculated the width as 12.5 inches, the length now becomes

L = 3W

L = 3 x 12.5

L = 37.5

Hence the length is 37.5 inches and the width is 12.5 inches

8 0
3 years ago
What’s the Greatest common factor of 12 and 60?
rewona [7]

12 is your answer

12 x 1 = 12

12 x 5 = 60

hope this helps

3 0
4 years ago
Read 2 more answers
Given a geometric sequence in the table below, create the explicit formula and list any restrictions to the domain.
Makovka662 [10]

Given:

The geometric sequence is:

n              a_n

1                        -4

2                      20

3                     -100

To find:

The explicit formula and list any restrictions to the domain.

Solution:

The explicit formula of a geometric sequence is:

a_n=ar^{n-1}            ...(i)

Where, a is the first term, r is the common ratio and n\geq 1.

In the given sequence the first term is -4 and the second term is 20, so the common ratio is:

r=\dfrac{a_2}{a_1}

r=\dfrac{20}{-4}

r=-5

Putting a=-4,r=-5 in (i), we get

a_n=-4(-5)^{n-1} where n\geq 1

Therefore, the correct option is B.

5 0
3 years ago
How do I prepare for the PSAT? Every time I take a practice test, I get stuck on a problem that is within my topic range, but fo
melamori03 [73]

Answer:

Maybe you can have someone read it to you to see if you can answer it that way after you answer it on your own a cupple of times

Step-by-step explanation:

8 0
3 years ago
20 points Help!
Afina-wow [57]
2x+8–10=22
2x=24
x=24/2
x=12

yes! you’re absolutely right, i hope i helped you
5 0
3 years ago
Read 2 more answers
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