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
Wittaler [7]
3 years ago
5

A 2.31-kg rope is stretched between supports that are 10.4 m apart, and has a tension in it of 49.2 N. If one end of the rope is

slightly tweaked, how long will it take for the resulting disturbance to reach the other end?
Physics
1 answer:
Gennadij [26K]3 years ago
7 0

Answer:

The resulting disturbance takes approximately 0.70 seconds to reach the other end.

Explanation:

The velocity of a disturbance on a rope depends on the physical properties of the material and the tension exerted to it, the equation is:

v=\sqrt{\frac{T}{\mu}}  (1)

With v the velocity of the disturbance, T the tension of the rope and μ the linear density of the rope. The linear density of the rope is the relation between mass M and length L so we have:

\frac{M}{L} (2)

Using (2) on (1):

v=\sqrt{\frac{TL}{M}}=\sqrt{\frac{49.2*10.4}{2.31}}\simeq14.9\frac{m}{s} (3)

If we assume the velocity of the disturbance is constant, it will take for the resulting disturbance to reach the other ends a time t:

t=\frac{L}{v}=\frac{10.4}{14.9}\simeq0.70\,s (4)

You might be interested in
Some one answer this question !
nirvana33 [79]

Answer:

A

Explanation:

The answer would be A because when feet push down on anything, the force will push down the skateboard

5 0
3 years ago
A bumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. The spring constant is 5000
34kurt
Part A:
For this part we’re assuming all the kinetic energy of the moving bumper car is converted into elastic potential energy in the spring since the car is brought to rest. Therefore you can find the total kinetic energy to get your answer:

KE = ½ mv^2
KE = ½ (200)(8)^2
KE = 6400 J

Part B:
Now you can use Hooke’s law to find the force:

F = kx
F = (5000)(0.2)
F = 1000 N
4 0
3 years ago
When is an object moving in uniform circular motion?
Tems11 [23]

Answer: An object undergoing uniform circular motion is moving

Explanation:

4 0
3 years ago
I need to find the current resistance and voltage for each in this complicated circuit plz help
konstantin123 [22]

Explanation:

The 11Ω, 22Ω, and 33Ω resistors are in parallel.  That combination is in series with the 4Ω and 10Ω resistors.

The net resistance is:

R = 4Ω + 10Ω + 1/(1/11Ω + 1/22Ω + 1/33Ω)

R = 20Ω

Using Ohm's law, we can find the current going through the 4Ω and 10Ω resistors:

V = IR

120 V = I (20Ω)

I = 6 A

So the voltage drops are:

V = (4Ω) (6A) = 24 V

V = (10Ω) (6A) = 60 V

That means the voltage drop across the 11Ω, 22Ω, and 33Ω resistors is:

V = 120 V − 24 V − 60 V

V = 36 V

So the currents are:

I = 36 V / 11 Ω = 3.27 A

I = 36 V / 22 Ω = 1.64 A

I = 36 V / 33 Ω = 1.09 A

If we wanted to, we could also show this using Kirchhoff's laws.

7 0
3 years ago
Why is the sky blue?
Levart [38]

Answer:

Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

7 0
3 years ago
Other questions:
  • Which line on the graph represents the radioactive decay of an isotope?
    14·1 answer
  • you are moving fast on a skateboard when your wheel gets stuck in a crack on the sidewalk using the term inertia explain what ha
    14·2 answers
  • What part of this equation represents the products?2NH3 + 4O2?2NO + 3H2O
    6·1 answer
  • How does the suns energy contribute to the carbon cycle
    15·1 answer
  • A​ one-way road passes under an overpass in the shape of half an​ ellipse, 20 ft high at the center and 20 ft wide. Assuming a t
    10·1 answer
  • When a solid compound dissolves in water,
    10·1 answer
  • Please helppppppppppp​
    5·1 answer
  • A boat was traveling at 15 mph when a passenger threw an object at 10 mph in the same direction the boat was moving. A friend,
    6·1 answer
  • How many seconds will it take for a the International Space Station to travel 450 km at a rate of 100 m/s?
    10·1 answer
  • An AC voltage source is connected to a resistor R = 1.90 102 Ω. The output from an AC voltage source is given by the expression
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!