17. A ball on the end of a string is being swung in a horizontal circle at a
constant speed as shown below. If the
string were to break at the point
shown, what would be the path of the
ball?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

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

A2.50 × 105 w motor is used for 26.4 s to pull a boat straight toward shore. how far does the boat move toward shore if a force of 4.20 × 104 n is applied by the motor?