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
taurus [48]
3 years ago
12

Two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 221

Hz, and the other trucker hears a frequency of 210 Hz, determine the speed of the trucks. Use the speed of sound as 343 m/s.
Physics
1 answer:
8_murik_8 [283]3 years ago
6 0

Answer:

v = 8.8 m /s

Explanation:

For listener and source going away from each other the formula of Doppler effect is as follows

\frac{f}{f_0} = \frac{V-v}{V+v}

V is velocity of sound , v is velocity of listner and source of sound

f₀ is apparent frequency and f is real frequency

V = 343 , v = ? ,f = 210 , f₀ = 221

Put these value in the relation above

[tex]\frac{210}{221} = \frac{343-v}{343+v}[/tex]

v = 8.8 m /s

You might be interested in
Help plz I’ll mark brainliest
marin [14]
I think it’s concave
3 0
2 years ago
Read 2 more answers
When an object is thrown upwards and reaches its maximum height its speed is: a. Greater than the initial
suter [353]

Answer:

Option d

Explanation:

When we throw an object in the upward direction, we provide it with certain initial velocity due to which it covers a certain distance up to the maximum height.

While the object is moving in the upward direction, its velocity keeps on reducing due to the acceleration due to gravity which acts vertically downwards in the opposite direction thus reducing its velocity.

So, the maximum height attained by the object is the point where this upward velocity of the body becomes zero and after that the object starts to fall down.

5 0
3 years ago
If the bond enthalpy for a C-H bond is 413 kJ, what will happen when the C-H bond is broken?
pentagon [3]

Explanation:

Bond Enthalpy : It is defined as amount of energy required to break a the particular bond in there gaseous state. It is also known as bond energy. It units are kJ/mol.

  • Breaking of a bond is an Endothermic process (energy absorbed from the surroundings).
  • Formation of bond is an Exothermic process (energy is released to the surroundings).

If the average bond enthalpy for a C-H bond is 413 kJ/mol, When the C-H bond breaks in which energy will be required ,which will be an endothermic reaction.

8 0
3 years ago
PLEASE HELP IT'S DUE IN LIKE 2 MINUTES
antoniya [11.8K]

Answer:

1kg

Explanation:

this box is the smallest and weighs the least. Hope this helps :]

4 0
2 years ago
A group of scientists have obtained some experimental results.
topjm [15]
<span>In order best to find out whether the obtained experimental results are worth mor etime and resources the group of scientists should present their results (could be done also in poster session) to other scientists in order to hear their opinion and get a feedback. The shoudl also ask another researchers to redo the experiments and to compare the results. </span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • According to Faraday's law, voltage can be changed by moving magnets away from the coil of wire. True False
    14·1 answer
  • A ferris wheel of radius 100 feet is rotating at a constant angular speed Ï rad/sec counterclockwise. using a stopwatch, the rid
    7·1 answer
  • Determine the mechanical energy of this object: a 1-kg pendulum has a speed of 2 m/s ar a height of 1 meter.
    6·1 answer
  • What does a chemical equation describe ?
    8·2 answers
  • The mass of a single gold atom is 3.27×10-22 grams. how many gold atoms would there be in 236 milligrams of gold?
    5·2 answers
  • How much horsepower does a camaro ss have?
    8·2 answers
  • A technician A says that a voltmeter can be used to monitor the output signal of an optical sensor. Technician B says that optic
    5·1 answer
  • Newton's Law of Cooling states that the rate of cooling of an object is proportional to the temperature difference between the o
    9·1 answer
  • Who discovered the law of conservation of energy?
    11·2 answers
  • Which of the following elements is more reactive than the others
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!