While on a car trip of 1000 km, you travel half of the distance at 90 km/hr and the other half at 60 km/hr. On the return trip, you travel half the time at 90 km/hr and the other half at 60 km/hr. What is your average speed for the entire trip (in km/hr)?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

How to calculate voltage drop in a series circuit

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.