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
Arlecino [84]
3 years ago
15

Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminu

m that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm^3. Show all calculations leading to an answer.
Mathematics
1 answer:
KIM [24]3 years ago
6 0
The answer is 172.8 g.

The volume of the cube (V) is:
V = a³            (a - the side of the cube)

The density (D) <span>is quotient of mass (m) and volume (V):
D = m/V = m/a</span>³
⇒ m = D · a³
<span>

It is given:
D = 2.7 g/cm</span>³
a = 4 cm
Therefore:
m =  D · a³ = 2.7 · 4³ = 172.8 g
You might be interested in
How much money, invested at an interest rate of r % per year compounded continuously, will amount to A dollars after t years? (R
Alex Ar [27]

Answer: $151377.5 should be invested.

Step-by-step explanation:

The formula for continuously compounded interest is

A = P x e (r x t)

Where

A represents the future value of the investment after t years.

P represents the present value or initial amount invested

r represents the interest rate

t represents the time in years for which the investment was made.

e is the mathematical constant approximated as 2.7183.

From the information given,

A = $300000

r = 3.8% = 3.8/100 = 0.038

t = 18 years

Therefore,

300000 = P x 2.7183^(0.038 x 18)

300000 = P x 2.7183^(0.684)

300000 = 1.9818P

P = 300000/1.9818

P = $151377.5

8 0
4 years ago
Find the slope of the line passing through the points (8, 8) and (8,-6).
xxMikexx [17]
The slope that passes both points is 0.

6 0
3 years ago
Given that GJ=70.2, JH=26, and GK=70.2, find the measure of JK
pychu [463]

Answer:

52

Step-by-step explanation:

The two sides (GJ and GK) are congruent, and the angle of ∠GHJ is 90°.

It means JH ≅ HK.

JH = 26 so you multiply 2.

26 x 2 = 52

JK = 52

5 0
3 years ago
Help!!! be quick
malfutka [58]

Answer:

Yeah you are correct

Step-by-step explanation:

4 0
3 years ago
The length of each side of a square was decreased by 2 inches, so the perimeter is now 52 inches. What was the original length o
telo118 [61]
60 inches because the square has 4 sides so 4x2 is 8 and 52+8 is 60.
3 0
3 years ago
Other questions:
  • The capsules and montage families love writing. Last year,each capsule wrote 4 essays, each montage wrote 6 essays, and both fam
    11·1 answer
  • PLZ HURRY WILL MARK BRAINLIEST The temperatures of three commercial freezers are as given. −13°F&lt; −12°F&lt;−9°F Select from t
    13·1 answer
  • Assembly of a television set in the factory is set at 45 minutes. Some workers take a shorter time (t) at this while some take l
    6·2 answers
  • I need help with this math problem pls
    5·1 answer
  • I have $33.83 then I earn $72.98.How much money do I have in all?
    6·2 answers
  • Danielle put 4.902 gallons of gasoline in a gas tank. What is 4.902 written in expanded form?
    12·1 answer
  • How far, to the nearest foot, does a horse on a Merry-Go-Round travel in one revolution if he is 6.5 feet from the center? (Use
    13·1 answer
  • 13. Find the missing number<br>1 3 - 12<br>4= 20)<br>5-30<br>6= 42<br>7 = ?​
    5·2 answers
  • This is page four what is the answer
    5·1 answer
  • Refer to picture <br> Need help on Q.8
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!