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
Lena [83]
3 years ago
9

Does the work cause a change in kinetic energy or a potential energy?

Physics
1 answer:
Alla [95]3 years ago
3 0

Answer:

Work cause a change in kinetic energy

You might be interested in
A wire is stretched between two posts. Another wire is stretched between two posts that are four times as far apart. The tension
Elena-2011 [213]

Answer:

Therefore,

The speed of the wave on the longer wire is 95 m/s.

Explanation:

Given:

For Short wire, speed is

v_{s}=190\ m/s

Let length of Short  and Longer wire be L_{s}\ and\ L_{l} such that

L_{l}=4\times L_{s}

To Find:

v_{l}=?  Speed on the longer wire

Solution:

The speed of a pulse or wave on a string under tension can be found with the equation,

v=\sqrt{\dfrac{F_{T}\times L}{m}

Where,

F_{T} = Tension on the wire

L = Length of Sting

m = mass of String

So here we have,

F_{T} = same

L_{l}=4\times L_{s}

Therefore,

v_{s}=\sqrt{\dfrac{F_{T}\times L_{s}}{m} ......equation ( 1 )

And

v_{l}=\sqrt{\dfrac{F_{T}\times L_{l}}{m}  .......equation ( 2 )

Dividing equation 1 by equation 2 and on Solving we get

\dfrac{v_{s}}{v_{l}}=\sqrt{\dfrac{L_{s}}{L_{l}}}

Therefore,

v_{l}=v_{s}\sqrt{\dfrac{4\times L_{s}}{L_{s}}}=190\times 2=380\ m/s

Therefore,

The speed of the wave on the longer wire is 95 m/s.

8 0
4 years ago
A lady walks 10 m to the north, then she turns and continues walking 30 m due east.
ANEK [815]

Answer:

The distance covered is 40 m and the displacement is 31,6m.

Explanation:

The distance covered is the sum of the two distances (10+30). The displacement is equal to the distance of the hipotenusa of the triangle that the two distances (10 m to north and 30m to east) create. Using the Pythagoras theorem the displacent is equal to the Square root of (30^2 +10^2) .

4 0
3 years ago
Complete the sentence
scoray [572]

The object is at rest.


This is due to the fact hwen two forces act upon each other on opposite sides, the movement of the object does not change due to the net force equaling 0.

6 0
3 years ago
23. The force required to accelerate a 2.0-kilogram
Marianna [84]
Answer:
C) 8.0 N

Explanation:
F=m*a
4 0
3 years ago
Jack has two boxes. One is 148g and one is 78g. If jack pushes both boxes with the same amount of force, which will accelerate f
Step2247 [10]
The 78g box, since it has less weight, would accelerate faster. If you had a frictionless surface, and you conducted this experiment, both boxes, without any outside forces, would accelerate at the same rate forever. However, in this problem we must assume the surface is not frictionless. Friction is determined by weight; the more weight, the more friction. Since the 78g box has less weight, it has less friction, making it easier to push with less force.
8 0
4 years ago
Other questions:
  • An astronaut in a spacecraft looks out the window and sees an asteroid move past in a backwards direction at 68 m/s relative to
    12·2 answers
  • How can astronomers use rocks from the Moon to estimate the age of the solar system?
    13·1 answer
  • I need a driving question on the topic of Space Time.
    6·1 answer
  • A street musician sounds the A string of his violin, producing a tone of 440 Hz, What frequency does a bicyclist hear as he a) a
    5·1 answer
  • Convert 60 miles/hour to m/s (1.6km = 1mile; 1000m = 1km)
    8·1 answer
  • What effect will the north pole of one magnet have on the north pole of another magnet?
    7·1 answer
  • I need help answering 30A and B. Help a guy out?
    15·1 answer
  • If the current in a wire is 2.0 amperes and the potential difference across the wire is 10.0 volts, what is the resistance of th
    11·2 answers
  • I need help with my homework really FAAAST​
    8·1 answer
  • A car accelerates if it:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!