Which of the following are examples of the effects of resonance? (Choose the best answer.)
1.the ringing sound that occurs when someone runs a wet finger around a wine glass
2.the shattering of a wine glass by the sound of a human voice at the proper pitch
3.the repeated pushing of a small child on a swing so as to get them to swing quite high
4.all of these
4
You might also like to view...
Conduction: On a cold day, a piece of metal feels much colder to the touch than a piece of wood. This is due to the difference in which one of the following physical properties of these materials?
A. density B. specific heat C. emissivity D. thermal conductivity E. mass
Initially, a blue automobile has twice the kinetic energy that a red automobile has. Both are braked to a stop; both have the same amount of braking force. The red auto will stop in ________ as the blue auto.
A. half the distance B. four times the distance C. the same distance D. twice the distance E. one fourth the distance
A common inactive ingredient in products such as sunscreen lotions and shampoo is triethyl amine, also known as TEA. Which of the following is the chemical structure for this compound?
A) a B) b C) c D) d
Warm air aloft is associated with
A) low air pressure aloft. B) warm summer nights. C) high surface pressure. D) high air pressure aloft.