Relative velocity - Study guides, Revision notes & Summaries

BOMA-HVAC QUESTIONS AND ANSWERS ALREADY GRADED A The man whose work is considered the real beginning of the science of air-conditioning _____. Willis Carrier Psychrometry refers to the relationship between _____ and _____. Humidity; air The amount of moisture in the air compared to how much it can hold is _____. Relative humidity The human bodies well being depends upon the _____. Bodies metabolism The device used to determine the moisture content of air is the _____ psychromet...

Displacement - Answer Position of an object relative to its starting position. Velocity - Answer Rate of change of displacement. Speed - Answer Rate of change of distance. Acceleration - Answer Rate of change of velocity. Newton's First Law - Answer An object continues in uniform motion in a straight line/ at rest unless a resultant force acts. Newton's Second Law - Answer The acceleration of an object is proportional to and in the same direction as its res...

NIFE AERO QUESTIONS AND ANSWERS RATED A+ What is a vector? direction and magnitude What is air density? Total mass of air particles per unit volume. m/v What is a moment? Force that is moved some distance. What are the requirements for an airplane to be in equilibrium flight? Sum of all forces and all moments around the center of gravity are equal to 0 Can equilibrium flight be achieved in a turn? No. Acceleration is occurring. There are moments What are the requirements for an a...

m   1. Which of the following is the mRNA start codon in most cases? A. UAA B. AGU C. AUG D. UGA 2. Which of the types of RNA is the smallest? A. mRNA B. tRNA C. rRNA D. 3. Which of the following is not considered a pyrimidine? A. C B. T C. U D. G 4. Which of the following is paired correctly? A. A-G B. C-G C. A-U D. G-T 5. Which of the following characterizes a Western blot? A. Antibody/protein hybridization B. DNA/RNA combination C. RNA ...

aqa as physics – mechanics exam questions and answers Weight Mass x Gravitational Field Strength Vector A quantity with size and direction Scalor A quantity with size only Newton's 2nd Law Resultant Force = mass x acceleration Displacement Position of an object relative to an origin Average Speed Distance Travelled / Time taken Instantaneous Speed distance travelled in an instant / time duration of an instant Average Velocity Change in displacement ...

The study of motion of an object about a circular path exclusive of the influences of mass and force - What is Angular Kinematics? Angular displacement, angular velocity, angular acceleration. - What does Angular kinematics include? Occurs when all points on an object move in a circular path around the same axis - When does angular motion occur? The angle an object moves through from its starting position relative to an axis of rotation - What is angular displacement defined as? Theta ...

The mechanism of injury (MOI) - Answer is the way in which traumatic injuries occur; it describes the forces (or energy transmission) acting on the body that cause injury. Three concepts of energy are typically associated with injury (not including thermal energy, which causes burns): - Answer Potential energy Kinetic energy The energy of work Work - Answer -is defined as force acting over a distance. -The energy of a moving object is called kinetic energy.Kinetic energy reflec...

What are the three factors that affect wave formation? - answer-wind velocity, fetch, and duration what is wind velocity for wave formation - answer-the speed of the wind what is fetch for wave formation - answer-the distance over the water that the wind can blow uninterrupted (which can be huge distances out at sea) what is duration for wave formation - answer-the amount of time the wind blows over that patch of water which is the greatest factor in wave formation? - answer-wind speed, l...

ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for one complete wavelength to pass a fixed poin...

Fundamental SI units - Answer kilogram (kg), metre (m), second (s), ampere (amp), mole (mol), kelvin (K) Random error - Answer An unpredictable and largely uncontrollable uncertainty. (Examples include human reaction time and other forms of human measurement.) (Random errors can be reduced by taking the average of repeated measurements.) Systematic error - Answer An error that occurs on all measurements. (An example is a zero error on a scale.) (Systematic errors can NOT be reduce...