Chegg a “black hole” theoretically has an escape velocity that is greater or equal to the velocity of light (3 x 108 m/s). it the effective mass of the black hole is equal to the mass of the sun (2 x 1030 kg), what is the effective “radius” (called the “schwarzschild radius” of the black hole

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).