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
Otrada [13]
2 years ago
14

A brass washer has an outside diameter of 4.50 cm with a hole of diameter 1.25 cm and is 1.50 mm thick. The density of brass is

8599 kg/m3. If you put this washer on a laboratory balance, what will it "weigh" in grams?
Physics
1 answer:
-Dominant- [34]2 years ago
6 0
We will find the mass from 
mass = density x volume 
We are told the density and must find the volume from the dimensions given 
the volume of the washer will be the area x thickness (remembering to convert all measurements to meters) 
if the washer had no hole, its area would be pi (0.0225m)^2 (remember to convert to meters and to use radius) 
the area of the hole is pi(0.00625m)^2 
so the area of the washer is pi[(0.0225m)^2 - (0.00625m)^2] = 1.5x10^-3 m 
the volume of the washer is 1.5x10^-3 m x 1.5x10^-3 m = 2.25x10^-6 m^3 (the thickness of the washer is 1.5 mm = 1.5x10^-3m) 
thus, the mass of the washer = 8598kg/m^3 x 2.25x10^-6m^3 = 0.0189kg = 18.9 grams
You might be interested in
A train moving near the speed of light enters a tunnel. According to a person standing in the middle of the tunnel, the back end
Neporo4naja [7]

Answer: The person sitting in the middle of the train sees the back of the train enter ing the tunnel before the front end comes out.

Explanation:

4 0
3 years ago
Identify the wave with the shortest wave length.
Valentin [98]

Answer:

d) gamma

Explanation:

hope i helped

7 0
2 years ago
Read 2 more answers
11 e) Can a conductor be given limitless charge? Obtain the equivalent resistance of several resistors if (a) they are in series
horsena [70]

Answer:

(e) no

(a) Rs = R' + R'' + R'''

(b) 1/Rp = 1/R' + 1/R'' + 1/R'''

Explanation:

11 e)

Practically it is not possible to give limitless charge to a conductor. It depends to the number of valence electrons.

(a) When the three resistances R'. R'' and R''' is in series combination.

Let they are connected to the voltage V and the current in each resistance is I.

According to Ohm's law

Voltage across R', V' = I R'

Voltage across R'', V'' = I R''

Voltage across R''', V''' = I R'''

So, let the equivalent resistance is Rs.

I Rs = I R' + I R'' + I R'''

Rs = R' + R'' + R'''

(b)

When the three resistances R'. R'' and R''' is in parallel combination.

Let they are connected to the voltage V and the current in each resistance is I', I''. I'''.

Current in R', I' = V/R'

Current in R'', I'' = V/R''

Current in R''', I''' = V/R'''

The equivalent resistance is Rp.

V/Rp = V/R' + V/ R'' + V/R'''

1/Rp = 1/R' + 1/R'' + 1/R'''

6 0
3 years ago
The steps in the formation of sedimentary rocks are listed below in an incorrect order.
Arlecino [84]
The first step in the formation of sedimentary rock is weathering of preexisting rocks. The second step is transport of the weathering products. The third step is deposition of the material. And at the end there is compaction and cementation of the sediment to form a rock.
According to this, the following shows the correct order of steps in the formation of sedimentary rocks:
C. <span>1, 4, 3, 2
</span>Rocks are weathered.Small pieces of rocks are carried by water.They are deposited in layers.<span>The sediments are compacted together.</span>
5 0
2 years ago
Read 2 more answers
which of the following is not necessary in a great summary?your investigayltion, your predicatio, excuses, possible errors?
zloy xaker [14]

Excuse are not acceptable


5 0
3 years ago
Other questions:
  • Billiard balls moving across a pool table is an example of _____ friction.
    8·1 answer
  • PLS PLS PLS PLS PLS PLS PLS PLS PLS HELP FREE POINTS
    10·1 answer
  • Although he did not present a mechanism, what were the key points of Alfred Wegener’s proposal for the concept of continental dr
    6·1 answer
  • What is the apparent magnitude of the brightest star in the Big Dipper?
    6·2 answers
  • Chinook salmon are able to move upstream faster by jumping out of the water periodically; this behavior is called porpoising. Su
    12·1 answer
  • 4) Write down the transformation of energy in torch light.<br>​
    9·1 answer
  • Light propagating in the glass n1= 1.65 wall of an aquarium tank strikes the interior edge of the wall with incidence angle 19.0
    10·1 answer
  • What is the atomic bomb equivalent to a 7.0 earthquake
    6·1 answer
  • What is inertia?by Walter Levin..<br>​
    10·1 answer
  • The noise from a power mower was measured at 104 dB. The noise level at a rock concert was measured at 121 dB. Find the ratio of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!