Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
The resultant force on the object is therefore zero, since the two opposing forces are balanced. This is called terminal velocity. [pic] http://tap.iop.org/mechanics/drag_forces/page_39518.html Let us assume that the “ball” image is the parachute. I will try to explain what happens as the parachute is released from a height. a) The parachute is released.
Aim of experiment (1.1) The aim of this experiment is to show that the force exerted by a jet of fluid striking onto an object is equivalent to the rate of change of momentum in the jet. It is possible to observe the shape of the fluid after the impact with the flat plate. Apparatus (1.2) Impact of a jet apparatus Steady water supply with a flow control valve A flat plate Set of calibrated weights Stop watch Theory of experiment (1.3) In this experiment the rate of change is calculated directly from the change in momentum rate of the fluid before the fluid hits the plate and after the fluid hits the plate. This is a diagram of the straight plate and what will happen as the fluid impacts on the plate. Before the impact of the fluid onto the plate, the fluid is in line with the x-axis, as shows by the velocity vector labeled V1.
Your balloon powered car demonstrates Newton's 3rd law of motion. Newton's third law states that every action has an equal and opposite reaction. When the air from the balloon goes through the straw, it carries a force. The direction of this force is in the direction of the flow of the air, in your case, to the back of the car. This is force is 'action'.
THE DESIGN WAS RELATIVELY THIN AT THE LEADING EDGE AND PROGRESSIVELY WIDENED TO A POINT OF GREATEST THICKNESS AS FAR AFT AS POSSIBLE. THE THEORY IN USING AN AIRFOIL OF THIS DESIGN WAS TO MAINTAIN THE ADHESION OF THE BOUNDARY LAYERS OF AIRFLOW WHICH ARE PRESENT IN FLIGHT AS FAR AFT OF THE LEADING EDGE AS POSSIBLE. ON NORMAL AIRFOILS THE BOUNDARY LAYER WOULD BE INTERRUPTED AT HIGH SPEEDS AND THE RESULTANT BREAK WOULD CAUSE A TURBULENT FLOW OVER THE REMAINDER OF THE FOIL. THIS TURBULENCE WOULD BE REALIZED AS DRAG UP THE POINT OF MAXIMUM SPEED AT WHICH TIME THE CONTROL SURFACES AND AIRCRAFT FLYING CHARACTERISTICS WOULD BE AFFECTED. THE FORMATION OF THE BOUNDARY LAYER IS A PROCESS OF LAYERS OF AIR FORMED ONE NEXT TO THE OTHER, IE; THE TERM LAMINAR IS DERIVED FROM THE LAMINATION PRINCIPLE
ii) liquids > vibrating particles have sufficient energy to move from their fixed positions to other parts within a liquid. > liquids take the shape of their container. iii) gases > particles have sufficient kinetic energy to help escape the attractive forces from other particles. > gases take up the complete volume of a container. The kinetic theory provides vital information on the sciences we learn.
This is how Newton’s 1st law applies to my balloon powered racecar. Newton’s 2nd Law: To move a mass, you need a force. The racecar demonstrates Newton’s 2nd because the mass that you are moving is the racecar, and to move the racecar you need a force. The force is considered to be the air that releases from the balloon through the straw because this force allows the car to move forward. Newton’s 3rd Law: For every action, there is an equal and opposite reaction.
Due to this convergence (where winds move to a center point), air is forced to rise over that area. If enough moisture is available, the rising air cools and condenses (as cold air cannot hold water vapor below a certain temperature) into tiny water droplets which constitute the cloud. So, low pressure areas are usually the birth-place of clouds. Sometimes, particularly in the winter, fog forms over a high pressure area due to radiation cooling(due to clear sky conditions over a high pressure area).This fog sometimes lift and forms thick low cloud called "anticyclone gloom". (5 points) |Score | | | 4.
05.08 Colligative Properties The purpose of this presentation is to demonstrate a real world application of colligative properties. Colligative properties are properties of solutions that are determined from the concentration of solute particles in a solution, and not by the identity (mass) of the particles in the solute. Colligative properties include freezing point depression, boiling point elevation, vapor pressure lowering, and osmotic pressure. When the temperature of a liquid is below its boiling point (evaporation), only the molecules around the surface of the liquid can escape into gas particles. Once a solute is added to the solvent, solute molecules occupy the molecular surface space of the liquid, swing the evaporation process.
To review, let's go through the water cycle step by step: a. First the water from the Earth's surface evaporates. Then it rises into the atmosphere, is cooled, condenses, and forms clouds. b. When enough water collects in the clouds, they release moisture in the form of rain, sleet, snow, or hail.