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
hoa [83]
3 years ago
10

Which of these toy trains has the slowest speed?

Physics
1 answer:
Paraphin [41]3 years ago
5 0
B) toy train 3 travels 100 cm in 30 seconds
You might be interested in
Is a force that opposes the motion between two objects in contact with each other.
Sergeeva-Olga [200]

Answer: Friction  :)        

7 0
3 years ago
Read 2 more answers
A rope of total mass m hnd length L is suspended vertically with an object of mass M suspended from the lower end. Find an expre
pantera1 [17]

Answer:

Part a)

v = \sqrt{xg + \frac{MLg}{m}}

Part b)

t = 12 s

Explanation:

Part a)

Tension in the rope at a distance x from the lower end is given as

T = \frac{m}{L}xg + Mg

so the speed of the wave at that position is given as

v = \sqrt{\frac{T}{\mu}}

here we know that

\mu = \frac{m}{L}

now we have

v = \sqrt{\frac{ \frac{m}{L}xg + Mg}{m/L}

v = \sqrt{xg + \frac{MLg}{m}}

Part b)

time taken by the wave to reach the top is given as

t = \int \frac{dx}{\sqrt{xg + \frac{MLg}{m}}}

t = \frac{1}{g}(2\sqrt{xg + \frac{MLg}{m}})

t = \frac{2}{9.8}(\sqrt{(39.2\times 9.8) + \frac{8(39.2)(9.8)}{1}})

t = 12 s

4 0
3 years ago
Which of the following is an arithmetic sequence? A. 2, 1, 4, 3, 6, 5, …
sergey [27]

Explanation:

it is not a arithmetic sequence

6 0
2 years ago
Based on the table above, _______ planets are made of the same things as _______ moons.
wolverine [178]

Answer:

b

Explanation:

3 0
3 years ago
How do I calculate the efficiency of motor
zepelin [54]

Answer:

the formula is efficiency = output / input × 100%

7 0
3 years ago
Other questions:
  • An indication of how close a measurement is to the correct result
    14·1 answer
  • A car accelerates uniformly from rest to a speed of 40.0 mi/h in 12.0 s. find (a) the distance the car travels during this time
    10·2 answers
  • How much heat, in joules and in calories, must be added to a 75.0–g iron block with a specific heat of 0.449 j/g °c to increas
    6·1 answer
  • How do paved parking lots and roads with concrete or asphalt affect water flow on the land?
    6·1 answer
  • When one of the two planes of vibration of a light wave is blocked, the resulting wave is called
    15·2 answers
  • A ball is thrown horizontally from the top of
    12·1 answer
  • Is a tape dispenser a pulley or a wheel and axis? 
    13·2 answers
  • In water, acids form _____.
    15·2 answers
  • Please help me<br> asdfghjklqwertyuioikjhgfrfghjuhygfdfghjmhgtfhjk
    10·1 answer
  • What do you mean by the SI units?Mention it's advantages​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!