1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mario62 [17]
3 years ago
6

A spherical steel ball has a mass of 3.475 g and a diameter of 9.40 mm. what is the density of the steel? ( The volume of a sphe

re is (4/3)\pi r^{3} where r is the radius)
Mathematics
1 answer:
strojnjashka [21]3 years ago
8 0

Answer:

Step-by-step explanation:

The formula for determining the volume of a sphere is given as

Volume = (4/3) πr³

where r is the radius and π is a constant whose value is 3.14

From the information given,

Diameter = 9.4 mm

Radius = diameter/2 = 9.4/2

= 4.7 mm

Volume of sphere = 4/3 × 3.14 × 4.7³

= 434.67 mm³

The formula for determining density is expressed as mass/volume

Mass = 3.475 g

Density = 3.475/434.67 = 0.008g/mm³

You might be interested in
What is -2 1/3 - (-5)=
Archy [21]

Answer:

\frac{8}{3}

Step-by-step explanation:

- 2 \frac{1}{3}  - ( - 5)

convert mixed fraction into improper fraction.

-  \frac{7}{3}   +  ( - 5)

calculate the sum of the fraction:

\frac{8}{3}

6 0
2 years ago
How many times does 7 go into 48
givi [52]
6 times because 6•7=42 so it must be 6 because 7•7=49
Good luck!!
4 0
3 years ago
Mrs Richmond bought some apples and pears in the ratio 2:5. An apple costs 30 cents. A pear costs 15 cents mire than an apple. H
Lera25 [3.4K]

Answer:

$2.85

Step-by-step explanation:

30×2=60

30+15=45

60+(45×5)=?

45×5=225

60+225=285

$2.85

Cuz every 100cents is one dollar

5 0
3 years ago
Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviati
SVEN [57.7K]

Answer:

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

\mu=104\\\\\sigma=35

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

\mu_M=\mu=104

The standard deviation will be related to the population standard deviation and the sample size as:

\sigma_M=\frac{\sigma}{\sqrt{N}} =\frac{35}{\sqrt{100}}=3.5

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

6 0
3 years ago
30 POINTS NEED HELP ASAP IN CLASS HURRY!!
kirza4 [7]

Answer:

5. -6/4

6. 1/2

7. 12/15

8. -21/8

Step-by-step explanation:

Steps are in picture

3 0
2 years ago
Read 2 more answers
Other questions:
  • Whats the answer for <br> b.b 9=21?
    9·1 answer
  • Please help correct answer will be marked brainliest answer :)
    7·1 answer
  • What is the volume of a rectangular prism with a length of 81\2 centimeters, width of 9 1\3 centimeters, and a height of 12 2\5
    10·1 answer
  • A pair of corresponding side of two similar pentagons have length of 12cm and 28cm
    7·1 answer
  • Is the square root of 9 rational
    5·2 answers
  • The ratio of boys to girls at a movie is 4:7. If there are 21 girls, how many boys are at
    8·1 answer
  • Please Help!
    12·1 answer
  • Super Cars Rental Company charges $40 per day and $1.80 per mile to rent a car. ABC Rental Company charges $25 a day and $3 per
    10·1 answer
  • Cathy attended a birthday party where the guests took their shoes off to jump in a bouncy castle. She made this graph to compare
    11·2 answers
  • Can someone help show my work HAHAHAHA its due today
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!