Which of the following is a scientific law?
A.
The attractive force between two objects depends upon their masses and the distance between them.

B.
No one is allowed to take the property of anyone else without their permission.

C.
No one is allowed to operate a motor vehicle unless that person is over the age of 16 and passes a driving exam.

D.
All cars must stop at red lights and move through an intersection when the light is green.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2