# physics

How much force is the air exerting on the front surface of the book with dimensions 19 x 27 cm. Assume atmospheric pressure equal to 100,000 Pa.

1. 👍
2. 👎
3. 👁
1. recall pressure is force per unit area, or
P = F/A
where the force is in Newton (N) , pressure is in Pascal (Pa) and area is in square meters (m^2)
thus, we first convert the dimensions to meters:
19 cm = 0.19 m
27 cm = 0.27 m
A = 0.19*0.27 = 0.0513 m^2
substituting,
100000 = F / (0.0513)
F = 100000*0.0513
F = 5130 N

hope this helps~ :)

1. 👍
2. 👎

## Similar Questions

1. ### Math

The dimensions of a pyramid are increased by 1100%. The percentage increase in surface area is The new dimensions are ___times the original dimensions, and the new surface area is ___times the original surface area. The increase

2. ### Physics

A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 32 N. The coefficient of

3. ### Science

1. A convex mirror with a focal length of -20cm forms an image 15cm behind the surface. If the object height is 1.2cm what is the image height? 2. An object is placed 10cm in front of a mirror and an image is formed that has a

4. ### physics

3) A 5.0 kg book is sitting on a table. Which describes the force acting on the book a. there are no forces acting on the book b. the force of the table upward is greater than the force of gravity downward c. the net force on the

1. ### Precal

A ski patroller pulls a rescue toboggan across a flat snow surface by exerting a force of 45 pounds on a handle that makes an angle of 22° with the horizontal. Find the work done in pulling the toboggan 160 feet.

2. ### Math

A rectangular prism has a volume of 960cm. It's width, length, and height are in the ratio 3:5:8. A) Determine the dimensions of the prism B) What is the ratio of the left side to the front to the top of the prism by surface area?

3. ### science

Colliding air masses can form a weather front. Which of the following is not a type of front: * 2 points A Stationary Front B Storm Front C Cold Front D Occluded Front When a warm air mass is caught between two cooler air masses,

4. ### Math

This question was already asked, but there wasn't any explanation provided. The dimensions of a pyramid are increased by 1100%. The percentage increase in surface area is The new dimensions are ___times the original dimensions,

1. ### physics

Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net

2. ### physics

A 75 kg skydiver in free fall is subjected to a crosswind exerting a force of 60 N and to a vertical air resistance force of 100 N. Calculate the resultant force acting on the skydiver [6 marks] and his angle of fall (relative to

3. ### Science

Please help check my answers 1. On a weather map, the center of the mid-latitude cyclone is labeled as an area (high/low) __________pressure. 2. On a weather map, a mid-latitude cyclone usually forms between these latitudes: A. 90

4. ### AP Physics

A Physics book has a height of 26 cm, a width of 22 cm, and a thickness of 4 cm. Find the pressure that the Physics book exerts on a desktop when the book lies face up and when the book is balanced on its spine. I know that P=F/A,