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2 years ago

Read the information in the box below.

Mathematics

1 answer:

liubo4ka [24]2 years ago

5 0

Answer:

The Maximum score = 4 points don't mean you get four coins, it's just on the paper.

Step-by-step explanation:

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The isotope cobalt-60 has a nuclear mass of 59.933820 u

Anit [1.1K]

To start this question, we should know what is the atomic number of cobalt. The atomic number (the number of protons) of Cobalt is Z =27.

Now, we know that a Cobalt 60 isotope means an isotope of Cobalt whose Atomic Mass is 60.

Thus, in a Cobalt 60 isotope, the number of neutrons in the nucleus are

$60-Z=60-27=33$

From the question we know that the given nuclear mass is 59.933820 u.

Now, the mass defect of Cobalt 60 can be easily calculated by adding the masses of the protons and the neutrons as per our calculations and subtracting the given nuclear mass from it.

Thus,

Mass Defect = (Number of Protons Mass of Proton given in the question) + (Number of Neutrons Mass of Neutron given in the question)-59.933820 u

$\therefore 27\times 1.007825+33\times 1.008665-59.933820=0.5634 u$

Thus, the required Mass Defect is 0.5634u.

In eV, the Mass Defect is $931.5MeV\times 0.5634=534.807 MeV$

6 0

3 years ago

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3 nineteens, tripled

34kurt

Answer:

19 x 3 = 57

19 plus 19 plus 19 = 57

19 to the power of 3 squared = 6859

Step-by-step explanation:

8 0

3 years ago

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Gus is making a Chilli recipe that calls 3 parts beans to five parts ground beef .if he is using 8 cups of ground beef for a big

masya89 [10]

First you need to find the percent equivalent to that of the ratio. The ratio is 3:5. From there you would take the 3, and divide it by 5. 3/5=0.6. Apply that to the information that you are given: 8(0.6)=4.8.

4 0

3 years ago

Find the unknown size please I really need answers

katen-ka-za [31]

Answer:

z=80°(corresponding angles)

 $x+z=180°(linear \: pair \: ) \\ 80° + x = 180° \\ x= 100°$ 

y=100 ° (alternate angles)

<h2>Hope it helps you<3</h2>

8 0

2 years ago

How do you determine the area of a circle? Could you give an example please?

pickupchik [31]

To determine the area if the circle, you must know the diameter or the radius of a circle.

If you know the radius of a circle, use this as your formula. Remember: Pi (the greek symbol thingy) is equal to 3.1415. (A is equal to area of the circle and r represents the radius)
$a = \pi {r}^{2}$
If you know the diameter, just divide the diameter to get the radius then use the same equation.

7 0

3 years ago

Read 2 more answers