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
kap26 [50]
3 years ago
15

#1 Not sure where to start. This is for AP Physics!

Physics
1 answer:
yaroslaw [1]3 years ago
8 0

First,

\rho=\dfrac mV

where \rho is density, m is mass, and V is volume. We can compute the volume of the roll:

2.7\,\dfrac{\mathrm g}{\mathrm{cm}^3}=\dfrac{1275\,\mathrm g}V

\implies V\approx472.22\,\mathrm{cm}^3\approx4.72\,\mathrm m^3

When the roll is unfurled, the aluminum will be a rectangular box (a very thin one), so its volume will be the product of the given area and its thickness x. Note that we're assuming the given area is not the actual total surface area of the aluminum box, but just the area of the largest face (i.e. the area of one side of the unrolled sheet of aluminum).

So we have

V=Ax

where A is the given area, so

4.72\,\mathrm m^3=\left(18.5\,\mathrm m^2\right)x

\implies x\approx0.255\,\mathrm m=255\,\mathrm{mm}

If we're taking significant digits into account, the volume we found would have been V=470\,\mathrm m^3, in turn making the thickness x=250\,\mathrm{mm}.

You might be interested in
State and explain guass law?
julia-pushkina [17]
"Gauss's Law. The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field. ,"  Source:    <span>hyperphysics.phy-astr.gsu.edu/hbase/electric/gaulaw.html

If you would like more info please look at the website. Im only in middle school, so I am sorry if this is not what you were looking for.....</span>
3 0
3 years ago
Which transactions can increase the balance in a checking account? Check all that apply.
saul85 [17]
What all is the answers

4 0
3 years ago
Read 2 more answers
I hope some one can help me!
zloy xaker [14]
Given that:
μ = 36 
<span>σ = 3 
</span>
<span>Standardize x to z = (x - μ) / σ </span>
<span>P( 39 < x < 42) = P[( 39 - 36) / 3 < Z < ( 42 - 36) / 3] </span>
<span>P( 1 < Z < 2) = P( x < 2) - P( x < 1)
                     = 0.9772 - 0.8413
                     = 0.1359 </span>

<span>(0.1359)(30)
= 4.0777
= 4 days</span>
7 0
3 years ago
What is the time it takes a pig to roll a distance of 6 m at a speed of 8 m/s? 0.7 m/s
Rudik [331]

Answer:

0.75 s

Explanation:

From the basic definition of sleed as distance traveled per unit time, s=d/t and making t the subject of the formula then t=d/s where t is time of traveling, d is distance covered and s is the speed. Substituting 6m for distance, d and 8 m/s for speed s then the time is calculated as t=6/8=0.75 s

Therefore, time is equivalent to 0.75 s

3 0
3 years ago
A 102 kg box is pushed on a linoleum floor with an acceleration of 2.5 ms to the second power. The force of the kinetic movie fr
maria [59]

A force is the push or pull acting on an object as a result of its interaction with another object. Here the net force acting on the box is 297 N

From the question

Given that,  

Mass of the box ,m = 102 kg

Acceleration of the box ,a = 2.5 m/s²

Frictional force acting between the box and the floor ,<em>f =</em> 42 N

Here we have to find the net force acting on the body, F = ?

By Newton's second law of motion,

∑F = ma,

where, F is the net force

m is the mass of the body

a is the acceleration of the moving body

If the body is considered moving in the x-direction then,

F-<em>f = ma</em>

<em>F - 42 = 102 x 2.5</em>

<em>          = 255</em>

<em>F = 255 + 42 = 297 N </em>

To learn more about force : brainly.com/question/12800231

#SPJ1

8 0
2 years ago
Other questions:
  • On his fishing trip Justin takes the boat 25 km south. The fish aren’t biting so he goes 10 km west. He follows a school of fish
    14·1 answer
  • If a frog jumps with an initial velocity of 100m/s at an angle of 60°. a. What is the frog’s x and y components of velocity? b.
    5·1 answer
  • Which of the following selections completes the given radioactive decay? A). Alpha particle B). Gamma radiation. C). Positron. D
    14·1 answer
  • Which statement about the positive and negative value of speed compared to velocity is true?
    11·1 answer
  • The flash on a high-tech camera contains a capacitor of 750 μ F. The battery in the camera supplies 330 V. (a) Determine the ene
    13·1 answer
  • The answer please it’s very simple this is 7th grade science
    13·2 answers
  • The position of a certain airplane during takeoff is given by x=1/2 *bt2, where b = 2.0 m/s2 and t = 0 corresponds to the instan
    10·1 answer
  • A certain ideal gas has molar heat capacity at constant volume CV. A sample of this gas initially occupies a volume V0 at pressu
    9·1 answer
  • How much heat is absorbed by 41 g iron skillet when its temperature varies from 9°C. to 20°C
    14·1 answer
  • Force is a vector because it has both ___
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!