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2 years ago

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A beam of electrons with energies of 250 MeV is scattered through an angle of 100 by a heavy nucleus. It is found that the diffe

rential cross-section is 65% of that expected from scattering from a point nucleus. Estimate the root mean square radius of the nucleus

1 answer:

WITCHER [35]2 years ago

4 0

Answer: The radii of atomic nuclei are of the order of 50×10^-15 to the negative 15th power.

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What is the measure of Angle 1 in this figure? <br>A. 30°<br>B. 80°<br>C. 110°<br>D. 130°

valkas [14]

Answer:

A

Step-by-step explanation:

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4 years ago

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Of the 25 girls on the Alden Middle School soccer team, 40% also play on a travel team. How many of the girls on the middle scho

SpyIntel [72]

Answer:

10 Girls

Step-by-step explanation:

Total number of girls in Alden Middle school= 25 girls

Percent of girls play for travel team= 40%

We have to find the numbers of girls who play for middle school team

Numbers of girls who play for middle school team= 25 × $\frac{40}{100}$

Numbers of girls who play for middle school team=25 × $\frac{40}{100}$

Numbers of girls who play for middle school team=10

Hence the number of girls play for travel team= 10 girls.

Hence, the correct answer is 10.

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3 years ago

Morgan and Kira have a number of jelly beans in a ratio 5:3. If Morgan and Kira have a total of 64 jelly beans, how many does Ki

Maurinko [17]

Answer:

Kira has 40 Jelly beans

Step-by-step explanation:

Morgan and Kira have a number of jelly beans in a ratio 5:3.

The ratio is

Morgan : Kira

5:3

The total proportion is= 5 + 3 = 8

Total number of Jelly beans that they have together is = 64 jelly beans

Hence, the number of Jellybeans that Kira has is calculated as:

5/8 × 64 jelly beans

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Kira has 40 Jelly beans

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3 years ago

1. Write an expression for the operation described below.<br> w minus 3

pentagon [3]

Answer:

w-3

Step-by-step explanation:

Do I really have to explain this??

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3 years ago

Jenny's great grandmother is 90 years old. Jenny is 12 years old, what percent of Jenny's great-grandmother's age is Jenny's age

user100 [1]

90x = 12
Divide both sides by 90

x = 0.1333....

Move the decimal to places to the right.
13.333% repeating.

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4 years ago

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