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
MrRa [10]
2 years ago
8

A tornado passes in front of a building, causing the pressure to drop there by 25% in 1 second. Part A If a door on the side of

the building is 8.1 feet tall and 3 feet wide, what is the net force on the closed door.
Physics
1 answer:
hram777 [196]2 years ago
8 0

Answer:

  F_net = 264, 26 pound

Explanation:

For this exercise we use Newton's second law

               F_net = F_int - F_outside

where the force can be found from the definition of pressure

              P = F / A

              F = P A

we substitute

               F_net = P_inside  A - P_outside A

               F_net = A (P_inside - P_outside)

indicate that the pressure on the outside is 25% less than the pressure on the inside

               P_outside = 0.25 P_inside

The area is

               A = L W

we substitute

              F_net = L W P_inside (1-0.25)

         

let's calculate

suppose the pressure inside is atmospheric pressure

              P_inside= P_atmospheric = 1,013 10⁵ Pa = 14.7 PSI

              F_net = 8.1 3 14.5 0.75

              F_net = 264, 26 pound

You might be interested in
Give an example of an animal that has adapted to its environment.
alex41 [277]
The most basic and perhaps powerful example is the fin-tailed fish, whose powerful tail is crucial for mobility, agility, and speed underwater. These adaptations have been underway for millions of years.
7 0
3 years ago
Read 2 more answers
According to perception of movement, in order to sense movement, humans need to see an object _____.
lesya692 [45]

Answer: The correct answer for the blank is- a. change its position relative to other objects.

Perception of motion can be described as a phenomenon of inferring the  direction and speed and of objects, which are moving in a visual scene.

An object is said to be in motion if its position is changed with respect to objects that are present in its surrounding.

Thus, in order to sense motion of objects, humans beings are required to see an object change its position with respect to other objects.

8 0
3 years ago
Which of the following has the most momentum?
777dan777 [17]

Answer:

0.50 kg moving at 10 m/s

Explanation:

          mv = p

 0.50(10) = 5.0 kg•m/s

5.0(0.50) = 2.5 kg•m/s

         1(2) = 2 kg•m/s

 0.40(10) = 4.0 kg•m/s

5 0
2 years ago
How does your Liver work with your Bladder in your body?
andreyandreev [35.5K]

Answer:

The liver filters the blood of toxins before it continues through the body. It also removes excess sugar from the arteries. Your kidney then further filters the blood for water-soluble waste and toxins to be excreted and finally, your bladder gets read of that water-soluble waste.

6 0
2 years ago
What’s the units of specific heat
DiKsa [7]
Hello Esmeralda

Specific heat is measured in Joules per g times degree Celsius.


I hope this helps!
6 0
3 years ago
Other questions:
  • Which of the following is a unit of volume of solids?
    13·2 answers
  • How many protons are in hydrogen -2
    6·1 answer
  • Assuming that the hill on the left will provide all of the potential energy for the ride, would this roller coaster actually mak
    5·1 answer
  • If the speed of a wave doubles while the frequency remains the same, it means
    12·1 answer
  • The ______ and _______ are used to calculate magnitude and direction of a resultant vector.
    7·1 answer
  • Two children are pulling on opposite sides of a blanket. The brother is pulling with a force of 3 N. The sister is pulling with
    5·1 answer
  • During their physics field trip to the amusement park, Leslie and Maria took a ride on the Whirligig. The Whirligig ride consist
    12·1 answer
  • A 3.90 kg block is in equilibrium on an incline of 31.0◦. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline o
    14·1 answer
  • Who is your favorite fictional character and why? Who is your favorite non-fictional person and why?
    12·1 answer
  • What force causes a falling object to gain kinetic energy?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!