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
Verizon [17]
1 year ago
7

Two trains leave a train station traveling in the same direction. They leave at the same time. Train A moves at 41.1 mph and Tra

in B moves at 26.5 mph. How long will it take Train A to be 39.1 miles ahead of Train B?
Physics
1 answer:
hammer [34]1 year ago
8 0

The time taken for Train A to be 39.1 miles ahead of Train B is 2.7 hours

<h3>How to determine the relative speed</h3>
  • Speed of Train A = 41.1 mph
  • Speed of Train B = 26.5 mph
  • Relative speed =?

Relative speed = 41.1 - 26.5

Relative speed = 14.6 mph

<h3>How to determine the time to be 39.1 miles apart</h3>
  • Relative speed = 14.6 mph
  • Distance = 39.1 miles
  • Time =?

Relative speed = distance / time

14.6 = 39.1 / time

Cross multiply

14.6 × time = 39.1

Divide both side by 14.6

Time = 39.1 / 14.6

Time = 2.7 hours

Thus, it will take train A 2.7 hours to be 39.1 miles ahead of Train B

Learn more about speed:

brainly.com/question/14334174

#SPJ1

You might be interested in
You have landed on an unknown planet, newtonia, and want to know what objects will weigh there. you find that when a certain too
AleksandrR [38]
Refer to the diagram shown.

Because the surface is frictionless, the resistive for, R, is zero.

Let m = the mass of the object.
Let a =  acceleration due to the applied force.
Therefore
12.7 N = (m kg)*(a m/s²)
a = 12.7/m  m/s²

The object travels  16.1 m in 2.5 s, starting from rest. Therefore
16.1 N = (1/2)*(12.7/m m/s²)*(2.5 s)² = 39.6875/m  N
m = 16.1/39.6875 = 0.4057 kg

For freefall, let g =  acceleration due to gravity.
The time to fall from 10.3 m is 2.88 s, therefore
10.3 m = (1/2)*(g m/s²)*(2.88 s)² = 4.1472g m
g = 10.3/4.1472 = 2.484 m/s²

Answer:
The gravitational acceleration on the planet is 2.5 m/s² (nearest tenth)


3 0
3 years ago
The orbital radius of an electron in a hydrogen atom is 0.846 nm. What is its de Broglie wavelength?
kotykmax [81]

Answer:

The  value  is  \lambda   = 1.329 *10^{-9} \  m

Explanation:

From the question we are told that

  The  orbital radius is  r =  0.846nm =  0.846 *10^{-9} \ m

Generally the de Broglie wavelength is mathematically represented as

      \lambda  =  \frac{2 *  \pi  r}{4}

substituting values

     \lambda  =  \frac{ 2 * 3.142  *  0.846 *10^{-9}}{4}

    \lambda   = 1.329 *10^{-9} \  m

6 0
3 years ago
PLEASE HELP HDJFJDJDJJCJDJDJFJD
GenaCL600 [577]

Answer:

Explanation:

free

5 0
3 years ago
Which electrons have the greatest amount of potential energy?
Andrei [34K]
The atoms furthest from the nucleus

7 0
3 years ago
A heat engine is a device that uses _____to produce useful work.
MakcuM [25]

A heat engine is a device that uses heat to produce useful work.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is <img src="https://tex.z-dn.net/?f=sin%5E%7B-1%7D%280.61%29%3F" id="TexFormula1" title="sin^{-1}(0.61)?" alt="sin^{-1}(0.
    6·1 answer
  • Two long parallel wires each carry 2.2 A in the same direction, with their centers 1.8 cm apart.A. Find the magnitude of the mag
    15·1 answer
  • An airplane is flying horizontally with a speed of 103 km/hr (278 m/s) when it drops a payload. The payload hits the ground 30 s
    7·1 answer
  • Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. The peaks of the ripples are 0.03 mete
    13·1 answer
  • The genetic material of the new bacteria is usually
    11·1 answer
  • The bands on Jupiter are ultimately caused by...
    12·1 answer
  • if you have a stick magnet and a u magnet plus a frigde magnet what way will it pull and which one is the strongest if it does n
    7·1 answer
  • How are systems different from industries? Use an example to support your answer.
    11·2 answers
  • What are some limitations to your direct observations of your environment? Give an example of an observation that could be made
    14·1 answer
  • What is kinematics?<br>explain!!~<br><br>thankyou ~​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!