## Presentation on theme: "Additional Real World Applications for Radical Expressions"— Presentation transcript:

Section 5-6 March 2, 2011 Fellow: Brooke Odle Teacher: Ms. Sanchez Saint Vincent Academy

Financial Planning A financial planner has been asked to determine the inflation rate for homes. To calculate the inflation of homes that increases from p1 to p2 over n years, the annual rate of inflation (expressed as a decimal) can be modeled as:

Medicine Doctors can approximate the Body Surface Area of an adult (in square meters) using an index called BSA where H is height in centimeters and W is weight in kilograms:

Geology/Meterology/Oceanography
The Pacific Tsunami Warning Center is responsible for monitoring earthquakes that could potentially cause tsunamis in the Pacific Ocean. Through measuring the water level and calculating the speed of a tsunami, scientists can predict arrival times of tsunamis. The speed (in meters per second) at which a tsunami moves is determined by the depth d (in meters) of the ocean: g is acceleration due to gravity, which is 9.8 meters per square second

Electrical Engineering
To measure voltage (V, measured in volts), electrical engineers use the following formula: Where P is power (measured in watts) and R is resistance (measured in ohms)

Physics/Engineering Physicists and engineers may study how force affects objects. A force is a vector (magnitude and direction) and vectors have components based on direction (x, y, z). To find the total force (resultant force), the following formula can be used: Fy Fx Fz

Physics/Engineering Example: Research on shoulder movement during wheelchair propulsion Researchers use the SmartWheel to determine the forces at the hand when it hits the handrim for each push Image courtesy of out-front.com Image courtesy of Dubowsky et al, 2009: Dubowsky SR, Sisto SA, and Langrana NA “Comparison of kinematics, kinetics, and EMG throughout wheelchair propulsion in able-bodied and persons with paraplegia: An: integrative approach.” Journal of Biomechanical Engineering, 131.