Asound wave of frequency 440 hz travels at a speed of 344m/s through the air in a concert hall. how fast would a note one octave higher, 880hz travel through the same concert hall?

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.