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
sp2606 [1]
3 years ago
7

A thin, 75.0 cm wire has a mass of 16.5 g. One end is tied to a nail, and the other is attached to a screw that can be adjusted

to vary the tension in the wire. (a) To what tension in Newtons must you adjust the screw to that a transverse wave of wavelength 3.33 cm makes 875 vibrations per second? (b) How fast would this wave travel?
Physics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

(a) 29.14 m/s

(b) 18.7 N

Explanation:

given information:

L = 75 cm = 0.75 m

mass, m = 16.5 g = 1.65 x 10⁻² kg

wavelength, λ = 3.33 cm = 0.0333 m

frequency, f = 875

first we calculate the speed

v = λf

  = 0.0333 x 875

  = 29.14 m/s

v = √F/μ

where

v = speed

F = tension

μ = linear density

μ = m/L, m is mass, and L is the length

thus,

v² = F/(m/L)

F = v²m/L

  = (29.14)²(1.65 x 10⁻² )/(0.75)

  = 18.7 N

You might be interested in
You can send your picture<br>and type the answer to the questions
Snowcat [4.5K]
The answer is B because I took the test and had the question
3 0
3 years ago
If a rocket-powered sled is accelerated to a speed of 440 m/s in 2.20 seconds, then what is the acceleration?
Margarita [4]

Answer:

 a = 200 m/s²

Explanation:

Given,

The initial speed of rocket-powered sled, u = 0

The final speed of rocket-powered sled, v = 440 m/s

Time taken to reach final speed, t = 2.20 s

The acceleration of the body is given by the change in velocity by time

                                       a = (v - u) / t

                                          = (440 - 0) / 2.20

                                          = 200 m/s²

Therefore, the acceleration of the rocket-powered sled, a = 200 m/s²

3 0
3 years ago
Three forces act on an object. a 3 n force acts due east and a 8 n force acts due north. if the net force on the object is zero,
Bingel [31]

The third force C is in the opposite direction of the sum of the first two forces, A+B, but the magnitude is the same as A+B  

Since A & B are at right angles we can just use Pythagoras and trig:  

A+B magnitude = sqrt(6^2 + 3^2) = 6.71  

A+B angle = arctan(6/3) deg north of east = 63.4 deg (first quadrant)

So C magnitude = 6.71 (same as A+B)  

[C angle = 63.4 deg south of west (third quadrant) = -180+63.4 deg polar = -116.6 deg

6 0
3 years ago
Water drips from a shower head (the sprayer at the top of the shower) and falls onto the floor 2.3 m below. The droplets are fal
Maurinko [17]

Answer:

0.767m

Explanation:

We are given that the time interval between each droplet is equal.

We are also given that the fourth drop is just dripping from the shower when the first hits the floor.

If they fall at the same time interval and we know that the distance between the shower head and floor are the same, they must therefore fall at the same velocity.

The distance between each drop has to be the same given that they fall at equal time intervals.

Let this distance be x.

We can then partition the entire height of the system into three parts (as shown in the diagram).

Hence, we can say that:

x + x + x = 2.3m

3x = 2.3m

=> x = 2.3/3 = 0.767m

Therefore, at the time the first drop hits the floor, the third drop is only 0.767 m below the shower head.

8 0
3 years ago
Which energy source is one that is used to boil water to make steam in power stations
Blizzard [7]

Answer:

heat energy is used in boiling water and to make steam at power stations

Explanation:

4 0
2 years ago
Other questions:
  • Strength of the electric force imagine two 1.0-g bags of protons, one at the earth's north pole and the other at the south pole.
    14·1 answer
  • The temperature -273°C is___.
    8·2 answers
  • When you graph the motion of an object, you put ____ on the horizontal axis and ____ on the axis.
    10·1 answer
  • What factors would change the force of friction?​
    8·1 answer
  • Nce?
    10·1 answer
  • I need help please. I’m between B or C and many responses have been B but I think that’s for if NO would be added and not SO3...
    9·1 answer
  • What is the momentum of a 0.1-kg mass moving with a speed of 5 m/s?
    12·1 answer
  • Which do you think the correct answer was wrong<br> Help plis:(
    11·1 answer
  • How are a series and parallel car different?
    11·2 answers
  • A wire coil inside a generator has 150 square loops and an area equal to 0.042 m2.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!