As a simple pendulum swings back and forth, the forces acting on the suspended object are (a) the gravitational force, (b) the tension in the supporting cord, and (c) air resistance. (i) Which of these forces, if any, does no work on the pendulum at any time? (ii) Which of these forces does negative work on the pendulum at all times during its motion?
How does gravitation and tension effects the pendulum?
"Which of the following properties of a soundwavedetermine its “pitch”? "
"A. Amplitude B. Distance from source to detector C. Frequency D. Phase E. Speed"
"Two identical tuning forks vibrate at 256Hz. One of them is then loaded with a drop of wax, after which 6 beats/s are heard. The period of the loaded tuning fork is: "
"A. 0.006s B. 0.005s C. 0.004s D. 0.003s E. none of these"