A. Using a string, hang two Ping-Pong balls about 2 cm apart on an iron or wooden stand. Using a straw, blow air between them. Observe what happens to the balls. B. Suspend a Ping-Pong ball using a 20 cm string. Blow air above the ball. Observe what happens. C. Fold a strip of cartolina into the shape of an airplane wing. Staple or paste the ends of the cartolina and pass a ball pen or stick through it. Blow a stream of air just above the curved upper surface. Describe the motion of the cartolina strip. Repeat blowing air but this time under the flat lower surface. Describe the motion of the cartolina strip. Relate the above conditions to the lifting effect of air on an airplane. Observations A. B. C.

A. Using a string, hang two Ping-Pong balls about 2 cm apart on an iron or wooden stand. Using a straw, blow air between them. Observe what happens to the balls. B. Suspend a Ping-Pong ball using a 20 cm string. Blow air above the ball. Observe what happens. C. Fold a strip of cartolina into the shape of an airplane wing. Staple or paste the ends of the cartolina and pass a ball pen or stick through it. Blow a stream of air just above the curved upper surface. Describe the motion of the cartolina strip. Repeat blowing air but this time under the flat lower surface. Describe the motion of the cartolina strip. Relate the above conditions to the lifting effect of air on an airplane. Observations A. B. C.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Kinetic Theory of Gas

The Kinetic Theory of gases is a classical model of gases, according to which gases are composed of molecules/particles that are in random motion. While undergoing this random motion, kinetic energy in molecules can assume random velocity across all directions. It also says that the constituent particles/molecules undergo elastic collision, which means that the total kinetic energy remains constant before and after the collision. The average kinetic energy of the particles also determines the pressure of the gas.

P-V Diagram

A P-V diagram is a very important tool of the branch of physics known as thermodynamics, which is used to analyze the working and hence the efficiency of thermodynamic engines. As the name suggests, it is used to measure the changes in pressure (P) and volume (V) corresponding to the thermodynamic system under study. The P-V diagram is used as an indicator diagram to control the given thermodynamic system.

Question

EXPERIMENT 2
Bernoulli's Principle
Introduction
Bernoulli's principle states that where the velocity of a fluid is high, the pressure is low and
where the velocity is low, the pressure is great.
Objective
To demonstrate Bernoulli's principle
Materials
20-cm strip of cartolina
2 iron or wooden stands
string
plastic straw
2 Ping-Pong or Styrofoam balls of same size
Procedures
A. Using a string, hang two Ping-Pong balls about 2 cm apart on an iron or wooden stand. Using a
straw, blow air between them. Observe what happens to the balls.
B. Suspend a Ping-Pong ball using a 20 cm string. Blow air above the ball. Observe what happens.
C. Fold a strip of cartolina into the shape of an airplane wing. Staple or paste the ends of the cartolina
and pass a ball pen or stick through it. Blow a stream of air just above the curved upper surface.
Describe the motion of the cartolina strip. Repeat blowing air but this time under the flat lower
surface. Describe the motion of the cartolina strip. Relate the above conditions to the lifting effect of
air on an airplane.
Observations
A.
В.
С.

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