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
Aliun [14]
3 years ago
14

An important news announcement is transmitted by radio waves to people sitting next to their radios 42 km from the station and b

y sound waves to people sitting across the newsroom 9.26 m from the newscaster. Taking the speed of sound in air to be 343 m/s, who receives the news first?
Physics
1 answer:
Alik [6]3 years ago
8 0

Answer:

news will reach to the listener who are 42 km apart

Explanation:

given,

distance of the radios from the station = 42 Km

speed of the sound in the air = 343 m/s

distance of the people = 9.26 m

time =\dfrac{distance}{speed}

time taken by the signal to reach to the radio

speed of the electromagnetic wave to reach to the people

speed of electromagnetic wave = 3 × 10⁸ m/s

t =\dfrac{42000}{3 \times 10^8}

t = 1.4 μs

time taken to reach to the people

time =\dfrac{distance}{speed}

t =\dfrac{9.26}{343}

t = 27 ms

time taken by the station to radio is less.

hence, news will reach to the listener who are 42 km apart

You might be interested in
The total mass of an object can be assumed to be focused at one point, which is called its center of _______. A. force B. veloci
QveST [7]
C.) <span>The total mass of an object can be assumed to be focused at one point, which is called its center of "Mass"

Hope this helps!</span>
4 0
3 years ago
Read 2 more answers
The Cenozoic Era is best described as the era in which
zhenek [66]
The era after the KT event occurred
6 0
3 years ago
Which of the following is NOT part of a circuit?
uysha [10]
I believe it’s a. Rim
5 0
2 years ago
The gravitational force experienced by Earth due to the Moon is ________ the gravitational force experienced by the Moon due to
Vsevolod [243]

The gravitational force experienced by Earth due to the Moon is <u>equal to </u>the gravitational force experienced by the Moon due to Earth.

<u>Explanation</u>:

The force that attracts any two objects/bodies with mass towards each other is defined as gravitational force. Generally the gravitational force is attractive, as it always pulls the masses together and never pushes them apart.

The gravitational force can be calculated effectively using the following formula: F=GMmr^2  

where “G” is the gravitational constant.

Though gravity has the ability to pull the masses together, it is the weakest force in the nature.

The mass of the Earth and moon varies, but still the gravitational force felt by the Earth and Moon are alike.

5 0
3 years ago
1. Describe what is happening at point A when these 3 vectors act on point A. 2. Describe what happen to the resultant vector at
zavuch27 [327]

Answer: Don't know sorry

Explanation:

4 0
2 years ago
Other questions:
  • Which of these planets has a giant red spot? saturn jupiter uranus neptune
    5·2 answers
  • A baseball thrown from the outfield to home plate does not have which of the following types of energy while it's in the air? A.
    9·1 answer
  • A box has a length of 18 cm, a height of 19 cm, and a width of 20 cm. What is its volume?
    12·2 answers
  • Laser transmissions travel at a higher speed than the radio waves true or false
    6·1 answer
  • 1. height of tower when stone dropped from it reaches ground in 10s is​
    5·1 answer
  • 5) help plz I need help<br> I don't know if I am right so if I am not can you plz help me
    6·2 answers
  • What is the correct path of electrons?
    14·1 answer
  • . What happens to the wasted energy in the kettle?
    14·1 answer
  • A force of 15 newtons is used to push a box along the floor a distance of 3 meters. How much was done?
    12·2 answers
  • Q/C An undersea earthquake or a landslide can produce an ocean wave of short duration carrying great energy, called a tsunami. W
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!