This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An unknown tuning fork is sounded along with a tuning fork whose frequency is 256. Hz and a beat ... (Read 67 times)

lbcchick

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
An unknown tuning fork is sounded along with a tuning fork whose frequency is 256. Hz and a beat frequency of 3. Hz is heard. What is the frequency of the unknown tuning fork?
 
  A) It must be 256 Hz.
  B) It must be 259 Hz.
  C) It could be either 253 Hz or 259 Hz; there is no way to tell.
  D) It must be 253 Hz.

Question 2

A 2200. kg auto moving at 12.0 m/s runs into a 3800. kg truck which is moving in the same direction at 5.00 m/s. The collision is perfectly inelastic.
 
  (a) What is the speed of the auto immediately after the collision?
  (b) What percentage kinetic energy did the truck gain in the collision?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kjo;oj

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

(a) 7.57 m/s
(b) 129. gain


lbcchick

  • Member
  • Posts: 550
Reply 2 on: Jul 27, 2018
Wow, this really help

bigsis44

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Visual Angle and Spatial Frequency Visual Angle and Spatial Frequency
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670 New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
Photographer unknown, Man with Big Shoes. Photographer unknown, Man with Big Shoes.
A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ... A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ...
If the density of an unknown gas is 2.59 g/L at STP, what is its molar mass? If the density of an unknown gas is 2.59 g/L at STP, what is its molar mass?
Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr
Video: Angiotensin II - kidneys, adrenal glands and dehydration

For a complete list of videos, visit our video library