Which property do liquids and gases share?
a. they maintain their shapes
b. they change their volumes depending on their containers
c. they change their shapes depending on their containers
d. they maintain their volumes

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

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.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.