Around hole is drilled through the center of a spherical solid of radius r. the resulting cylindrical hole has a height of 4 cm.

a.) what is the volume of the solid that remains?

b.) what is unusual about the answer?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?