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
Akimi4 [234]
4 years ago
9

A train is traveling at a velocity of 90 m/s and it has to travel a distance of 2500 meters to reach the train station. How long

until the train reaches the train station?
Physics
1 answer:
Vlada [557]4 years ago
8 0

Answer:

27.7 or 28 seconds

Explanation:

2500/90=27.7

You might be interested in
30) When you press a piano key, a hammer strikes a very tight cable to produce a clear tone. How does the cable that produces a
skelet666 [1.2K]

Answer:

Remember: in physics and music, frequency equates to pitch, and amplitude equates to loudness. Also, remember frequency is inversely proportional to wavelength- remember this!

Thus, (B) should be the correct answer, because, think about it,  if a note is higher, than the wavelength should be shorter so the length should also be shorter, but in the case of B, if the cable is longer or thicker then the wavelength gets longer. Therefore, going from low to high, the string should be getting shorter, due to the fact that as wavelength gets shorter, frequency gets higher.

3 0
3 years ago
Which of these is one way that mechanical waves differ from electromagnetic waves?
Andrew [12]
<span>Mechanical waves require a medium
and electromagnetic waves do not.</span>
6 0
3 years ago
Read 2 more answers
The distance between two successive maximaof
denpristay [2]

Answer:

v = 1.224 m/s

Explanation:

given,                          

distance between the two successive maxima = 1.70 m

number of crest = 8          

time = 11 s                            

frequency is equal to number of cycle per secod

f = \dfrac{8}{11}          

f = 0.72\ Hz                

velocity of wave

v = f x λ                

v = 0.72 x 1.70        

v = 1.224 m/s          

Hence, the wave speed is equal to v = 1.224 m/s

4 0
4 years ago
How do you find mass, volume and density? Any formulas?
Andrei [34K]
Density=mass/volume. if you know any 2 of these variables, you can figure out the missing one
5 0
3 years ago
A speed boat travels from the dock to the first buoy a distance of 20 meters in 18 seconds it began the trip at a speed of 0 m/s
Lunna [17]

Answer:

1.11 m/s

Explanation:

The motion of the boat is an example of accelerated motion, since the velocity is not constant. However, we don't need to find the acceleration, because we are only interested in the average velocity of the boat, which is given by:

v=\frac{d}{t}

where d is the total distance covered and t the time taken. In this problem, the boat covered a distance of d = 20 m and it takes t = 18 s, therefore the average velocity is

v=\frac{20 m}{18 s}=1.11 m/s

6 0
3 years ago
Other questions:
  • What are the parts of an atom
    6·2 answers
  • Consider the roller coaster on the track. If you want to increase the kinetic energy of the roller coaster as it proceeds throug
    5·1 answer
  • Which one of the following temperatures is equal to 5°c?
    9·2 answers
  • Calculate the amount of heat needed to raise the temperature of 200g of ice from-30°C 50C water. (C = .5 for ice, C 1 for water,
    10·1 answer
  • Fun fun fun facts about the west
    10·2 answers
  • You need to know the height of a tower, but darkness obscures the ceiling. You note that a pendulum extending from the ceiling a
    7·1 answer
  • 55N of force are applied onto a table, but the force of friction is 8N. What is the net force acting on the table? Please explai
    11·1 answer
  • A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the
    10·1 answer
  • State how the strength of the X-rays can be increased.<br>​
    8·1 answer
  • Science
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!