A sound wave of frequency
1210 Hz has a wave speed of
343 m/s. What is the wavelength
of the wave?
(Unit = m)

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above