As a wave enters a different medium, the wave’s speed changes. In the case of a constant force, work is the scalar product of the force acting on an object and the displacement caused by that force. Speed. In physics, work is defined as a force causing the movement—or displacement—of an object. They are most commonly sound waves characterized by a high amplitude of movement. a. BSA Advancement ID#: 68 Requirements last updated in: 2019 Pamphlet Publication Number: 35913 Pamphlet Stock (SKU) Number: 35913 Pamphlet Revision Date: 2011 not all stars form iron, though. A higher frequency causes a shorter wavelength and greater energy. The energy in 2.2 pounds (1 kilogram) of hydrogen gas is about the same as the energy in 1 gallon (6.2 pounds, 2.8 kilograms) of gasoline. FALSE - Intense sounds are simply sounds which carry energy outward from the source at a high rate. Though both force and displacement are vector quantities, work has no direction due to the nature of a scalar product (or dot product) in vector mathematics. The nature of energy is very complex, but it is best described by these characteristics: • energy is the ability to do work, • work is the application of a force through a distance (e.g., carrying yourself and a loaded back pack up a mountain trail), release energy, keeping the star alive. If such reactions happened, they would basically use the star’s energy, which would cause it to collapse. Waves travel at different speeds in different media. but nuclear reactions that form elements heavier than iron do not release energy; instead, they consume energy. More and more primary-care-physicians offer wellness programs to provide holistic treatment. The speed of a wave is determined by the type of wave and the nature of the medium. FALSE - Intensity is a power/area relationship and as such the units are typically Watts/meter 2.The Watt is a unit of power and the meter 2 is a unit of area.. b. Answer: CDGJ. Speed is a measure of the distance a wave travels in an amount of time. Because hydrogen has a low volumetric energy density, it is stored onboard a vehicle as a compressed gas to achieve the driving range of conventional vehicles. Focusing on the 8 dimensions of wellness can increase productivity, reduce healthcare costs, and increase earning potential.

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