A341.3 hz tuning fork is resonating in a closed tube on a cool day. if the tube has a length of 0.24 m, then what is the speed of sound in this experiment? a) 328 m/s b) 340 m/s c) 343 m/s d) there is not enough information to tell.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.