Ahose has been clamped so that the area at the clamp is only one quarter the area of the rest of the hose. when we ignore the viscosity of water, the ratio of the volume of water delivered per unit time when the clamp is on to the volume of water delivered per unit time without the clamp

Which one of the following research methods can show cause and effect

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s. what is the wavelength?

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.