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
djverab [1.8K]
2 years ago
12

A person observes a firework display for A safe distance of .750 km. Assuming that sound travels at 340 m/s in air what is the t

ime between the person see and hear a firework explosion
Physics
1 answer:
WINSTONCH [101]2 years ago
3 0

Answer:

t = 2.2 s

Explanation:

Given that,

A person observes a firework display for A safe distance of 0.750 km.

d = 750 m

The speed of sound in air, v = 340 m/s

We need to find the between the person see and hear a firework explosion. let it is t. So, using the formula of speed.

v=\dfrac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{750\ m}{340\ m/s}\\\\t=2.2\ s

So, the required time is 2.2 seconds.

You might be interested in
If a total force exerted by water in a container with a bottom area of 3 square meters is 900 newtons, what's the water pressure
anyanavicka [17]
<h3>Answer:</h3>
  • p=300 Pa
<h3>Explanation:</h3>

_______________

S=3 m²

F=900 N

_______________

p - ?

_______________

p=F/S=900 N / 3 m² = 300 Pa

6 0
1 year ago
A car is travelling with a velocity of 10 m/s and has a mass of 550 kg. The<br> car has<br> energy.
Elenna [48]

Answer: The car has a kinetic energy (because it's in motion) of:  27500J

Explanation:

Formula: E=\frac{1}{2}mv^2

E=\frac{1}{2}mv^2

E=\frac{1}{2}(550kg)(10m/s)^2

E=\frac{1}{2}(550kg)(100m^2/s^2)

E=\frac{1}{2}(55000J)\\E=27500J

3 0
3 years ago
Precision measurements of the acceleration due to gravity show that the acceleration is slightly different in different location
DochEvi [55]
Gravity largely depends on the comparison of two objects; it's why you have the equation F= (GMm)/r^2. On Earth, you have different altitudes that, with the formula, will give different results for gravity because the radius is different everywhere. This difference on calculations, however, are seen to be miniscule. We know gravity as 9.81 m/s^2 but it might be different by thousandths or hundreds of thousandths of a decimal.
6 0
3 years ago
Read 2 more answers
Based on this passage, what is campylobacter?
alexdok [17]
I believe the correct answer from the choices listed above is option 4. Base from the passage given above, it is very clear that the Campylobacter is a bacteria used to test in <span>identifying drug-resistant bacteria. Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
Read 2 more answers
A WLAN transmitter that emites a 100 mW signal is connected to a cable with a 3dB loss. If the cable is connected to an antenna
irakobra [83]

Answer: 24 dBm

Explanation:

in the attachment

6 0
3 years ago
Other questions:
  • A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her orig
    9·1 answer
  • A negative charged particle of known magnitude q is placed in a uniform electric field of known strength E. What additional info
    11·1 answer
  • How can we prove air in water​
    14·2 answers
  • Find out the x-component and y-component of the following vectors:
    13·2 answers
  • AM radio frequencies range between 550 kHz (kilohertz) and 1600 kHz and travel at the same speed, 3.0 x 108 m/s. What is the wav
    8·2 answers
  • What is the overall voltage for a redox reaction with the half-reactions Mg(s) Mg2+ + 2e- and Cu2+ + 2e- Cu(s)?
    9·2 answers
  • Provide support to the argument that Cornell university did violate ethical requirements for research
    5·1 answer
  • A ball tied on a string rotates in a circular path as shown above. The only forces acting on the ball at any point are the weigh
    8·1 answer
  • What is SI system and SI unit?​
    9·1 answer
  • 2. nakabuti ba sa mga bansa sa kanlurang asya ang sistemang mandato na ipinatupad ng mga bansang kanluranin​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!