Sound waves will either be reflected (echo effect) or absorbed (dissipated) depending upon the material make-up of the barrier
Answer:
The driving force for (a) heat transfer is temperature difference. (b) electric current is voltage difference. (c) fluid flow is pressure or hydraulic head difference.
Explanation: (a) The driving force for heat transfer is temperature difference. Heat transfer between two mediums is possible only if the two mediums are at different temperature, the higher the temperature, the higher the heat transfer.
(b) The driving force for electric current is voltage difference. Voltage difference is defined as the potential difference in charge between two points in electrical field. For electric current to occur,the voltage must be high.
(c) The driving force for fluid flow is pressure difference or hydraulic head difference. For fluid to move upward,it requires energy.
Aerobic dance<span> has its foundation in </span>dance<span>-inspired movements. It is a cardiovascular workout set to music in a group </span>exercise<span> setting. You do not have to memorize </span>dance<span> moves, as the classes are taught by instructors who verbally tell and visually show the </span>choreography<span>.</span>
Explanation : We know that two forces acting on the satellite.
The speed of the satellite and the force of the gravity on the satellite then the result , the satellite moves around the earth in a circular motion.
A satellite to move tangentially to a circular path, while revolving around the circular path because the centripetal force is acting on it.
So, we can say gravity is responsible for the motion of the satellite in a circular path.
Answer: 1000 Hz · 0,5 m = 500 m/s
Explanation: speed = frequency · wavelength
