Newton's law of universal gravitation is valid for distances covering an enormous range, but it is thought to fail for very small distances, where the structure of space itself is uncertain. Far smaller than the diameter of an atomic nucleus, the crossover distance is called the Planck length. It is determined by a combination of the constants G, C, and h, where cis the speed of light in vacuum and his Planck's constant with units of angular momentum. (a) Use dimensional analysis to find a combination of these three universal constants that has units of length. You will need to consider non-integer powers of the constants exponent of G exponent of c * Your answer cannot be understood or graded. More Information exponent of h (b) Calculate the Planck length. Need Help? Road