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
GarryVolchara [31]
3 years ago
11

A steel piano wire is 0.7 m long and has a mass of 5 g. It is stretched with a tension of 500 N. What is the speed of transverse

waves on the wire? To reduce the wave speed by a factor of 2 without changing the tension, what mass of copper wire would have to be wrapped around the wire?
Physics
1 answer:
anygoal [31]3 years ago
6 0

Answer:

a.264.6m/s

b.4995g

Explanation:

Data given,

Tension T=500N,

length of wire=0.7m,

mass,m=5g=0.005kg

a.To determine the speed of the transverse wave, we use the equation below

V=\sqrt{\frac{FL}{m} } \\F=tension, L=length, m=mass\\

if we insert values as given in the question , we arrive at

V=\sqrt{\frac{500*0.7}{0.005}}\\ V=264.6m/s

b. To reduce he wave speed by a factor of 2, the new wave speed will become 132.3m/s.

From the equation, if mass,m becomes subject of formula, we have

m=\frac{V^{2}}{FL}\\ m=\frac{132.3^{2}}{500*0.7}\\m=50kg\\m=5000g

Hence to reduce the speed by a factor of 2, (5000-5)g=4995g mass of copper wire would have to be wrapped around the wire.

You might be interested in
A skier rides a ski-lift up to the top of the mountain, 1600 m above sea level. If the skier has a mass of 74 kg, how much poten
statuscvo [17]

Answer:

I think it is 1.16 MJ

Explanation:

PE=mgh

PE=(74)(9.81)(1600)= 1,161,504J = 1.16MJ

3 0
3 years ago
Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magni
Mkey [24]
During the first phase of acceleration we have:
v o = 4 m/s;  t = 8 s; v = 13 m/s, a = ?
v = v o + a * t
13 m/s = 4 m / s + a * 8 s
a * 8 s = 9 m/s
a = 9 m/s : 8 s
a = 1.125 m/s²
The final speed:
v = ?;  v o = 13 m/s; a = 1.125 m/s² ;  t = 16 s
v = v o + a * t
v = 13 m/s + 1.125 m/s² * 16 s
v = 13 m/s + 18 m/s = 31 m/s 
3 0
3 years ago
YALL THIS QUESTION IS DUE IN 2 HOURS AND I HAVE 3 MORE PAGED TO DO PLEASE HELP ME WITH THIS PHYSICS HOMEWORK PROBLEM!!!! I ATTAC
goldfiish [28.3K]

Answer:

I dont know :)

Explanation:

7 0
3 years ago
Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to t
bija089 [108]

This question is incomplete, the complete question is;

Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to the magnetic field. The electric field strength 1.5 m from the center of the circle is 7 mV/m.

At what rate is the magnetic field changing?

Answer:

the magnetic field changing at the rate of 9.33 m T/s

Explanation:

Given the data in the question;

Electric field E = 7 mV/m

radius r = 1.5 m

Now, from Faraday law of induction;

∫E.dl = d∅/dt

E∫dl = A( dB/dt )

E( 2πr ) = πr² ( dB/dt )

( 0.007 ) = (r/2) ( dB/dt )

( 0.007 ) = 0.75 ( dB/dt )

dB/dt = 0.007 / 0.75

dB/dt = 0.00933 T/s

dB/dt = ( 0.00933 × 1000) m T/s

dB/dt = 9.33 m T/s

Therefore, the magnetic field changing at the rate of 9.33 m T/s

5 0
3 years ago
Fat Albert (the TV show character) runs up the stairs on Monday. On Tuesday, he walks up the same set of stairs. Which day did h
lys-0071 [83]

Answer:

Tuesday bc instead of running he/she was walking bc he/she might not have as much energy

Explanation:

8 0
3 years ago
Other questions:
  • When an atom absorbs energy, the electrons move from their _______ to an exited state?
    15·1 answer
  • When the volleyball rises in the air, what does the force of gravity cause the volleyball to do
    8·1 answer
  • Calculate the kinetic energy of a particle with a
    13·1 answer
  • Two parallel wires are separated by 6.10 cm, each carrying 2.85 A of current in the same direction. (a) What is the magnitude of
    5·1 answer
  • A hit-and-run incident is one of the more common cases for paint evidence.<br> true or false
    9·1 answer
  • On April 26, 1939, Great Britain did this in response to Hitler's aggressive moves?
    11·1 answer
  • Based on the graph, which statement is true?
    10·1 answer
  • Which of the following statements best describes an electromagnetic wave with a short wavelength?
    6·2 answers
  • A 92-kg receiver running at 8 m/s catches a pass across the middle and is immediately brought to a stop during a collision with
    15·1 answer
  • The volume in the pump when the pump piston is all the way down represents the _______
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!