« previous next »

Author Question: A piano wire of length 1.5 m vibrates so that one-half wavelength is contained on the string. If the ... (Read 95 times)

ishan

  • Hero Member
  • *****
  • Posts: 546
on: Jul 28, 2018
A piano wire of length 1.5 m vibrates so that one-half wavelength is contained on the string. If the frequency of vibration is 65 Hz, the amplitude of vibration is 3.0 mm, and the density is 15 g/m, how much energy is transmitted per second down the wire?
 a. 21 W
  b. 11 W
  c. 5.4 W
  d. 2.2 W
  e. 1.1 W

Question 2

Suppose that you were selected for a Survivor-type TV show. To help keep your group connected, you suggest that long vines can be tied together and used to transmit signals in cases of emergency. To get the signals to travel faster, you should
 a. select lighter vines.
  b. increase the tension on the vines.
  c. hang weights from the vines at evenly spaced intervals.
  d. do all of the above. e. do (a) or (b) above, preferably both.


kusterl

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Intussusception. A short length of small intestine has telescoped into itself. Intussusception. A short length of small intestine has telescoped into itself.
Use fingertips to apply friction to muscle attachments along inferior length of the clavicle. Use fingertips to apply friction to muscle attachments along inferior length of the clavicle.
Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ... Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ...
Short-wavelength flux is reflected by Earth Short-wavelength flux is reflected by Earth
How many gold atoms are contained in 3.75 moles of gold? How many gold atoms are contained in 3.75 moles of gold?
An electrochemical cell is based on these two half-reactions An electrochemical cell is based on these two half-reactions
Video: Morphology of a tomato plant

For a complete list of videos, visit our video library