5. In the diagram, two balls of mass M1=10 kg and M2=30 kg are attached to a string rotating around a common center point (the I black dot in the middle). They rotate counter-clockwise with an angular velocity 2 rad/s. R1 is 4 m and R2 is 20 m a. What is the direction of the angular velocity of the mass M2? Up/Down/Left/Right/Into the Page/Out of the Page b. What is the tangential speed of mass M1? c. How many times greater is the tangential speed of M2 than M12 d. How many times greater is the moment of inertia of M2 than the moment of inertia of M1?​

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.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.

3. which is not a primary color of light? blue red green yellow