1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
matrenka [14]
4 years ago
7

From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a frequ

ency that is 0.835 times as small as the frequency emitted by the car when it is stationary. The speed of sound is 343 m/s. What is the speed of the car?
Business
1 answer:
yuradex [85]4 years ago
5 0

Answer:

The speed of the car is 67.77 m/s and it is moving away from the observer.

Explanation:

The apparent frequency is given as

f' = f\dfrac{ [v - vo]}{ [v - vs]}

Here

o is the  observer

s is the source which is car

v is the speed of  sound  = 343 m/s

f = true frequency emitted by the car (when stationary)

f ' = 0.835 f

so

f' = f\dfrac{ [v - vo]}{ [v - vs]}\\0.835 f= f\dfrac{ [v - vo]}{ [v - vs]}\\0.835 = \dfrac{ [343 - 0]}{ [343 - vs]}\\0.835=\frac{343}{343-x}\\x=-67.77 m/s

The speed of the car is 67.77 m/s and it is moving away from the observer.

You might be interested in
The cost of resources and using more efficient are two factors that affect the supply of a product
Art [367]

I DONT KNOW DUGHHH ONE TWO THREE OH IT NOT MATH ZOWWRY

6 0
3 years ago
If bond interest expense is $800,000, bond interest payable increased by $8,000 and bond discount decreased by $2,000, how much
Zarrin [17]
<span>If bond interest expense is $800,000, bond interest payable increased by $8,000 and bond discount decreased by $2,000, how much cash was paid for bond interest? = </span>$806,000
5 0
3 years ago
Choose all that apply. Select all the responsibilities of consumers. Gather information about products and services before makin
jolli1 [7]

Answer:

Stay informed about products that you buy to be aware of product recalls.

Gather information about products and services before making a purchase to be aware of price, quality, and the product specifications.

Read instructions on products and use them as intended.

Take action and report faulty products, fraudulent activity, and any other violation of consumer rights.

Consider the impact of your purchases on others and choose products that do not harm the environment.

Insist on compensation if you are not satisfied with your purchase.

8 0
3 years ago
You form an alliance with a group of your coworkers at the office and agree that you will only discuss group-related matters at
8_murik_8 [283]

Answer:

d. Group Norm

Explanation:

Group Norms are informal rules that generally discourage behaviors that impede the efficacy of a group and and encourage the group to work efficiently.

They are regulations that groups adopt that ensure some form of order and they are also a reflection of the expectation of members of the group should interact and work.

Here, agreeing that members of the group will only discuss group-related matters at 1pm on Wednesdays is an example of a Group Norm because;

1. It is an unwritten rule

2. It is majorly to ensure that order is maintained so that the purpose of the group remains undefeated.

3 0
3 years ago
In making a sales forecast, the business owner can only use his best judgment to determine projected costs and revenues.
jeyben [28]
False.

The business owner should not only rely on his best judgement to determine projected costs and revenues. He should consider the trends in the market and his company performance on the previous months in order to make a sales forecast. 


7 0
3 years ago
Read 2 more answers
Other questions:
  • It is understandable that productivity is rising faster in the service sector because service businesses have newer technologies
    15·2 answers
  • Put autoimmune in a sentence
    12·1 answer
  • The Digby Company has just purchased $40,900,000 of plant and equipment that has an estimated useful life of 15 years. The expec
    5·1 answer
  • On the first day of its fiscal year, Chin Company issued $10,000,000 of five-year, 7% bonds to finance its operations of produci
    13·1 answer
  • Mediocre economists often consider only the immediate apparent effects of a change, whereas a good economist will also consider
    10·1 answer
  • Suppose a competitive market is comprised of firms that face identical cost curves. The firms experience an increase in demand t
    14·2 answers
  • Determine whether each consequence of poor financial decisions is an initial consequence or a long-term
    7·2 answers
  • I=5 ia called........ language​
    10·1 answer
  • Partners Dennis and Lilly have decided to liquidate their business. The following information is available:
    15·1 answer
  • When collective decision making is utilized to resolve economic questions regarding the allocation of resources,
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!