Answer:
93.54 Hz
Explanation:
✓From the question, Number of harmonic frequency is 4
✓ the frequency (f₄ )= 116.5 Hz
✓harmonic frequency can be calculated using below expresion
fₙ = [ (nv)/4L]..........eqn(1)
v = speed of sound= 343 m/s
n = number of given harmonic frequency
L = Length of the rope
Using above expresion ,and substitute the values at (n=4) which is 4th harmonic frequency to find the " initial Lenght of the rope
fₙ = [ (nv)/4L]
f₄ = 4× 343 /4L
f₄ = 343 /L
L= 343 /f₄
But f₄= 116.5 Hz
L= 343/116.5= 2.944m
Hence, initial Lenght of the rope= 2.944m
We can determine the frequency of new length as ( initial Lenght of the rope + tubing Lenght)
= ( 2.944m + 0.721m )
= 3.667m
Hence, new length= 3.667m
To find the new frequency of the 4th harmonic we will use eqn(2)
f₄ = v/l ...............eqn(2)
From equation (2) If we substitute the values we have
f₄ = (343/3.667)
= 93.54 Hz
Hence, the the new frequency of the 4th harmonic is
93.54 Hz
Answer: 103.3?
Explanation:
what does "no reference to direction of motion mean"?
Explanation:
its means the quantity in question is a scalar quantity, has only magnitude but no direction, for example. speed,has no reference to direction of motion, since the speed of a body say 5 m/s( the direction of the body has not been stated) but the velocity of a body say 5m/s to the east has a reference to direction of the motion.
That's why velocity is different from speed
A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant?
A hanging 7.5 kg object stretches a spring 1.1 m, the spring constant of the spring is approximately 66.82 N/m.
Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position, can be used to compute the spring constant.
F = -k * x
Here, we have:
mass (m) = 7.5 kg,
displacement (x) = 1.1 m,
acceleration due to gravity (g) = 9.8 m/[tex]s^2[/tex].
We know that:
weight (W) = mass * acceleration due to gravity
So,
W = m * g
W = 7.5 kg * 9.8 m/[tex]s^2[/tex]
W = 73.5 N
F = W = 73.5 N
F = -k * x
73.5 N = -k * 1.1 m
Solving for k:
k = -73.5 N / 1.1 m
k ≈ 66.82 N/m
Thus, the spring constant of the spring is approximately 66.82 N/m.
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A long board is free to slide on a sheet of frictionless ice. As shown in the top view in the diagram, a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation, which of the following occurs? Select two answers.
Answer:
A) rational kinetic energy is conserved
For the scenario painted below Rational kinetic energy is conserved
Option A is correct
What is Rational kinetic energy?Kinetic energy is simply defined as the energy that an item or particle has as a result of its movement.
In conclusion, For A longboard is free to slide on a sheet of frictionless ice. and a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation Rational kinetic energy is conserved
Read more about Kinetic energy
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Explain how a current is induced in the wire?
Answer:
If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. This current flows because something is producing an electric field that forces the charges around the wire. (It cannot be the magnetic force since the charges are not initially moving). ... that determines the induced current.
Someone please help I’m so confused
Explanation:
the switch and the battery
PLEASE HELP!!
16. Carol views a specimen under the microscope and notices that it has no nucleus. What
must she be looking at?
A. Animal cell
B. Plant cell
C. Bacteria
D. Protist
Answer:
C. Bacteria
Explanation:
Bacteria and archaea are the two domains which consist of organisms with prokaryotic cells. Prokaryotic cells are cells without nuclei or membrane-bound organelles.
You come out of a shopping mall one night and look at your car. Your car is painted blue, and the light illuminating the car is yellow. What color does your car appear to you in the yellow light?
HELP PLZZZ
Which optical devices can form images that are larger than the original
object?
Answer: B- A and C
Explanation:
A P E X
The optical devices uses light. The correct option for the optical devices can form images that are larger than the original object is B i.e A and C.
What is optical device?The device which uses light for the meaningful purpose is called optical devices.
The device which form the images larger than the object are the converging type of lens or mirror.
The lens which is converging is the convex lens denoted by C in diagram and the converging mirror is the concave mirror denoted by A.
Therefore, the correct option for the optical devices can form images that are larger than the original object is B i.e A and C.
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a dogs tail hit a 1.3kg flower vase, knocking it over. the net force on the flower vase over time is shown below
what is the bases speed at t=20 ms?
round answer to two significant figures
note that time is in ms.
Answer: 0.15 m/s
Explanation:
Carlos uses a rope to pull his car 30 m to a parking lot because it ran out of gas. If Carlos exerts 2,000 N of force to pull the rope, and the rope is at an angle of 15° to the road, how much work did he do? Round your answer to two significant figures.
1.6 × 104 J
3.5 × 104 J
5.8 × 104 J
9.0 × 104 J
Answer:
Explanation:
Remark
The only thing that might trip you up is what to do with the angle. The vertical component of the 15 degrees does no work against anything. So the 15 degrees limits the horizontal force.
The formula is
Work = F * d * cos(15)
The givens are
F = 2000 N
d = 30 m
Cos(15) = 0.9659
Solution
Work = 2000 * 30 * cos(15)
Work = 57,955
Rounded to two places would be 5.8 * 10^4
C
30 PTS NEED THIS FAST
Answer:
the one made from aluminum
Explanation:
The speed of the 2 kg cart after 5 seconds is ? cm/s.
A medication given to treat ventricular
tachycardia and ventricular fibrillation
Answer:
Amiodarone
Explanation:
Please Help ASAP!!!
What/Where is the direction of wind during launch of a paper aeroplane? (Bernoulli's Principle)
Answer:
The Forces of Flight
At any given time, there are four forces acting upon an aircraft.
These forces are lift, weight (or gravity), drag and thrust. Lift is
the key aerodynamic force that keeps objects in the air. It is the
force that opposes weight; thus, lift helps to keep an aircraft in
the air. Weight is the force that works vertically by pulling all
objects, including aircraft, toward the center of the Earth. In order
to fly an aircraft, something (lift) needs to press it in the opposite
direction of gravity. The weight of an object controls how strong
the pressure (lift) will need to be. Lift is that pressure. Drag is a
mechanical force generated by the interaction and contract of a
solid body, such as an airplane, with a fluid (liquid or gas). Finally,
the thrust is the force that is generated by the engines of an
aircraft in order for the aircraft to move forward.
Explanation:
Why does eating less meat conserve more water than just eating plants?
Answer:
Studies show that eating fewer animal-based products could reduce water use since animal production uses more water than crops do. In addition, reducing the amount of food that's lost or wasted at various points in the food supply chain could feed about 1 billion extra people while simultaneously reducing water use.
what are three assumptions of the kinetic molecular theory
A car of mass 800 kg goes round a corner of radius 65 m at a
speed of 10 m/s
b) Suggest how this force is likely to be obtained.
Answer:
Centrifugal force = 1230.77 Newton.
Explanation:
The force associated with the car is generally referred to as centrifugal force and it can be calculated using the formula;
Centrifugal force = mv²/r
Given the following data;
Mass = 800kg
Radius = 65m
Velocity = 10m/s
To find the force;
Centrifugal force = (800*10²)/65
Centrifugal force = (800*100)/65
Centrifugal force = 80000/65
Centrifugal force = 1230.77 Newton.
Which image shows an example of the strong nuclear force in action?
i think this is the incomplete page that you are showing but the answer is
:-
BWhen a wool cloth is rubbed on the surface of a balloon, it tends to give away electrons causing the surface of the balloon to become :
positively charged
negativity charged
neutrally charged
Answer:
It is negativity charged
Answer:
positively charged
Explanation:
a wool has neutral charges hence when rubbed against a balloon it will generate positive charges
A thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past the slit. You observe that the first completely dark fringes occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright fringe has an intensity of 2.00 W/m² at its center. What is the intensity of the light at a point on the screen that is one-quarter of the away from the central bright fringe to the first dark fringe?
Answer:
I = 1.62 w/m^2
Explanation:
wavelength = 625 nm
position of screen = 3.00 m past the slit
Determine the intensity of the light
I = [tex]I_{0} ( sin\frac{\beta }{2 } /\frac{\beta }{2} )^2[/tex]
β = 2π*Dsin∅ / л
[tex]I_{0}[/tex] = 2
Attached below is the remaining part of the solution
How would we find bond length?
What exactly occurs at the alveoli? Explain using blood vessels, diffusion, oxygen, and carbon dioxide in your answer (2-3 sentences)
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
Hope this helps :)
In the following graph, what is the slope?
Answer:
to find the slope you need to find the change in distance then you divide by the corresponding change in time
eg
( 4-2) ÷ (2-1)
= 2m/s
Think of a technology or appliance that you use regularly. Identify the transfers and transformations of energy necessary to operate the technology. Explain your answer
PLZZ
Answer:
Energy conversion
Explanation:
We regularly use automobile which runs on the chemical energy of the fuels such as diesel and petrol, the chemical energy from the fuel would convert into the thermal energy which is used to drive the engine of the vehicle,further the thermal energy converted into the mechanical energy which is used to drive the prime mover of the automobile.
What is thermal energy?It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
We frequently utilize vehicles that operate on chemical energy from fuels like diesel and gasoline.
This chemical energy is transformed into thermal energy, which drives the engine of the vehicle, and then mechanical energy, which drives the prime mover of the vehicle.
Thus, we can say that the transfers and transformations of energy are necessary to operate the technology.
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To increase an impulse:
A. increase the change in momentum.
B. decrease the change in velocity.
C. increase the distance.
D. decrease the mass.
what is the speed of the pulley A if pully D is moving at a speed of 8 km/h
Answer:
hey I know the answer for this
Explanation:
it will be reduce the speed of A
the answer is 7.
this is the exact answer.
if you don't like this answer means pls comment me
Radio waves travel at the speed of light. Marsha listen to radio station at 91.3 mHz, which is a frequency of 9.13*10^ 7 H2 What is the wavelength of this radio signal in a vacuum?
Answer:
3.29 meters
Explanation:
c = λ f
c = speed of light = 3 * 10^8 m/s
λ = wavelength
f = frequency
3 * 10^8 m/s = λ * (9.13 * 10^7 1/s)
λ = (3 * 10^8 m/s) / (9.13 * 10^7 1/s)
λ = 3.29 m
Charges of +5C and −9C are at a distance of 1m from each other. Which diagram represents the force between the two charges?
Answer: Well the charges in 9c are positive so 5c is th force between the two making the ansewr
Explanation:
Answer:
C (3RD OPTION)
Explanation:
E2020
I need to know on the second one.
A. Negative
B.positive
C. Neither
IT WOULD MEAN A LOT IF U COULD HELP ME
HELP DUE IN 3 MINUTESSSSS
Answer:
roots
Explanation: