Two cars travel in the same direction along a straight highway, one at a constant speed of 51 mi/h and the other at 76 mi/h. assuming they start at the same point, how much sooner does the faster car arrive at a destination 14 mi away?
how far must the faster car travel before it
has a 12 min lead on the slower car?
answer in units of mi.

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

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.