Ng 11 A mass m on a frictionless table is attached to a hanging mass M by a cord through a hole in
the table. Find the speed with which m must move for M to stay at rest

According to the tide table below what time of day will the highest tide occur?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

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?