Answer Happy

An angular simple harmonic oscillator: O A. involves a linear displacement and a restoring torque OB. oscillates at an angle to the x axis O C. involves an angular displacement and a restoring torque O D. involves an angular displacement and a restoring force O E. oscillates along the y axis
Question 20 Consider the statement: "Earth moves in a stable orbit around the Sun and is therefore in equilibrium". The statement is: O A. false, because the Earth is rotating on its axis and no rotating body can be in equilibrium O B. false, because no moving body can be in equilibrium O C. true, because the Earth does not fall into or fly away from the sun O D. false, because the Earth has a considerable acceleration O E. true, because if it were not in equilibrium then buildings and structures would not be stable
Question 23 When the temperature of a copper penny is increased by 100 C°, its diameter increases by 0.17%. The area of one of its faces increases by: O A. 0.17% B. 0.34% OC. 0.51% O D. 0.27% O E. 0.13%