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
Contact [7]
3 years ago
15

Two containers have a substantial amount of the air evacuated out of them so that the pressure inside is half the pressure at se

a level. One container is in Denver at an altitude of about 6,000 ft and the other is in New Orleans (at sea level). The surface area of the container lid is A = 0.0145 m² . The air pressure in Denver is PD = 80500 Pa. and in New Orleans is PNO = 100750 Pa. Assume the lid is weightless.
Required :
Write an expression for the force FM, required to remove the container lid in New Orleans

Physics
1 answer:
Vlada [557]3 years ago
4 0

Answer:

Fm=\frac{A(Pno)}{2}

Fm=730.7375N

Explanation:

Hello!

To solve this problem we must follow the following steps

1. Remember that force is the product of pressure and the perperndicular area on which it acts.

2. Draw a free body diagram of the container lid in New Orleans (see attached image).

3. Now we add the forces with their respective sign and find Fm equalizing it to zero, in this way we find the minimum force Fn that causes the lid to rise upwards

if you follow the previous steps and review the attached image you will find the following equation

Fm+(A)(Pc)=(Pno)(A)

Where

Fm=force required to remove the container lid in New Orleans

A=area=0.0145m^2

Pno=pressure in New Orleans= 100750 Pa

Pc=pressure in the tank(Remember that the pressure inside is half the pressure at sea level)=100750/2Pa=50375Pa=Pno/2

solving for Fm

Fm=A(Pno-Pc)

Pc=Pno/2

Fm=A(Pno-\frac{Pno}{2})} \\Fm=\frac{A(Pno)}{2}

this is the final expresion

if we solve

Fm=\frac{0.0145m^2(100750Pa)}{2}=730.4375N

You might be interested in
Where in the laboratory is long, unrestrained hair most likely to be a safety concern?
antiseptic1488 [7]
Probably anything concerning fire
6 0
3 years ago
The graph above shows the position and time calculate the velocity of the particle from T=0s to T=4s?
zzz [600]

Answer:

The velocity of the particle from T = 0 s to T = 4 s is;

0.5 m/s

Explanation:

The given parameters from the graph are;

The initial displacement (covered) at time, t₁ = 0 s is x₁ = 1 m

The displacement covered at time, t₂ = 4 s is x₂ = 3 m

The graph of distance to time, from time t = 0 to time t = 4 is a straight line graph, with the velocity given by the rate of change of the displacement to the time which is dx/dt which is also the slope of the graph given as follows;

The \ slope \ of \ the \ displacement \ time \ graph, \ m =velocity, \ v= \dfrac{x_2 - x_1}{t_2 - t_1}

Therefore, \ the \ velocity \ of \ the \ particle \ v  = \dfrac{3 \  m - 1 \ m}{4 \ s - 0 \ s}  = \dfrac{2 \ m}{4 \  s} = \dfrac{1}{2} \ m/s

The velocity of the particle from t = 0 s to t  = 4 s = 1/2 m/s = 0.5 m/s.

3 0
3 years ago
What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?
bija089 [108]
Your answer would be

B. 7.3 KG
6 0
3 years ago
A 5.50-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical
iris [78.8K]

Answer:

17.71N/m

Explanation:

The period of the spring is expressed according to the expression;

T = 2 \pi \sqrt{\frac{m}{k} } \\

m is the mass of the object

k is the force constant

Given

m = 5.50kg

T = 3.50s

Substitute into the formula;

T = 2 \pi \sqrt{\frac{m}{k} } \\3.5 = 2 (3.14) \sqrt{\frac{5.5}{k} } \\3.5 = 6.28 \sqrt{\frac{5.5}{k} } \\\frac{3.5}{6.28} =  \sqrt{\frac{5.5}{k} } \\0.557 = \sqrt{\frac{5.5}{k} } \\square \ both \ sides\\0.557^2 = (\sqrt{\frac{5.5}{k} })^2 \\0.3106 = \frac{5,5}{k}\\k = \frac{5.5}{0.3106}\\k =  17.71N/m

Hence the force constant of the spring is 17.71N/m

4 0
3 years ago
The SI unit for force is the newton. Which of the following is equivalent to a newton? A. kg/m B. kg·m/s2 C. kg·m/s D. kg·m/s
bearhunter [10]
I may be wrong but A
8 0
4 years ago
Read 2 more answers
Other questions:
  • A man stands on the roof of a building of height 13.0and throws a rock with a velocity of magnitude 30.0 at an angle of 34.9 abo
    8·1 answer
  • Use the concept of feilds to describe how forces can act from a distance
    11·1 answer
  • When light encounters a barrier with slits cut it in it, the light will bend through the slits creating a pattern like that seen
    5·2 answers
  • A runner accelerated to 4 m/s^2 for 20 seconds before winning the race.How far did he/she run?
    13·1 answer
  • Which of the following Group 7A elements is the most reactive?
    10·2 answers
  • The ______ of an object is a measure of its intertia.<br><br> Please help!!!
    11·2 answers
  • Rank planets left to right based on distance from the sun
    12·2 answers
  • What do you call ends of a magnet​
    11·1 answer
  • Question 3.
    8·1 answer
  • The spark plugs are threaded into the top of each cylinder and provide a place for the spark to jump within the ________.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!