A sphere of mass m rests against a friction-less vertical wall while joined to one
of its points A by means of a light and in-
extensible string connected to the center of
the sphere (Figure 10.33). If the angle between
the vertical wall and the string is a,
determine, in terms of m, g and a the tension
in the string and the reaction at the wall.​

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.

What is the answer to these problems 30 pt