Answers
Answer:
ratio of the piccolo's length to the flute's length is 0.4916
Explanation:
given data
frequency of piccolo = 522.5 Hz
frequency of flute = 256.9 Hz
to find out
ratio of the piccolo's length to the flute's length
solution
we get here length of tube that is express as
length of tube = velocity of sound ÷ fundamental frequency .......................1
so here ratio of Piccolo length to flute that is
= 0.4916
so ratio of the piccolo's length to the flute's length is 0.4916
Related Questions
An object of mass 10.0kg is released at point A, slidesto the bottom of the 30° incline, then collides with ahorizontal massless spring, compressing it a maximumdistance of 0.750m. (See below.) The spring constant is 500N/m, the height of the incline is 2.0 m, and the horizontalsurface is frictionless. (a) What is the speed of the object atthe bottom of the incline? (b) What is the work of frictionon the object while it is on the incline? (c) The springrecoils and sends the object back toward the incline. Whatis the speed of the object when it reaches the base of theincline? (d) What vertical distance does it move back up theincline?
A battery with an emf of 12.0 V shows a terminal voltage of 11.7 V when operating in a circuit with two lightbulbs, each rated at 4.0 W (at 12.0 V), which are connected in parallel.What is the battery's internal resistance?
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0.67 m/s2
0.075 m/s2
54 m/s2
Answers
it's 9 squared divided by 6
Answers
Complete question:
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +6.18 x 105 m/s to a final velocity of 2.59 x 106 m/s while traveling a distance of 0.0708 m. The electron's acceleration is due to two electric forces parallel to the x axis: F₁ = 8.87 x 10-17 N, and , which points in the -x direction. Find the magnitudes of (a) the net force acting on the electron and (b) the electric force F₂.
Answer:
(a) The net force of the electron, ∑F = 4.07 x 10⁻¹⁷ N
(b) the electric force, F₂ = 4.8 x 10⁻¹⁷ N
Explanation:
Given;
initial velocity of the electron, = +6.18 x 10⁵ m/s
final velocity of the electron, = 2.59 x 10⁶ m/s
the distance traveled by the electron, d = 0.0708 m
The first electric force,
(a) The net force of the electron is given as;
∑F = F₁ - F₂ = ma
where;
a is the acceleration of the electron
∑F = ma = (9.11 x 10⁻³¹ kg)(4.468 x 10¹³)
∑F = 4.07 x 10⁻¹⁷ N
(b) the electric force, F₂ is given as;
∑F = F₁ - F₂
F₂ = F₁ - ∑F
F₂ = 8.87 x 10⁻¹⁷ - 4.07 x 10⁻¹⁷
F₂ = 4.8 x 10⁻¹⁷ N
Final answer:
The problem involves calculating the acceleration of an electron, then using Newton's second law to find the net force on the electron. This is used to find the magnitude of a second electric force acting on the electron.
Explanation:
First, we can calculate the acceleration of the electron using the formula a = Δv/Δt, where 'a' is acceleration, 'Δv' is the change in velocity, and 'Δt' is the change in time. In this case, Δv = vf - vi = 2.59 x 106 m/s - 6.18 x 105 m/s = 1.972 x 106 m/s. The time taken by the electron to travel 0.0708 m can be found using the equation d = vi t + 0.5 a t₂. We use these values to get Δt which we use to find 'a'.
Next, let's use Newton's second law F = ma to find the net force acting on the electron. The only forces acting on the electron are electric forces, and we know one them is 8.87 x 10-17 N. If we designate this known force as F₁ then the total force F total = F₁ + F₂ where F₂ is the unknown electric force.
Finally, we can find F₂ = F total - F₁. This gives the magnitude of the second electric force.
Learn more about Physics - Electric Forces here:
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Answers
Answer:
option the correct is B
Explanation:
Let's analyze the different options, for a closed system
- an internal reaction changes the system, but does not affect the surrounding environment
- Heat, is a means of transfer that occurs when two bodies are in contact, one of the body can be a closed system since the only thing that happens is thermal transfer, without movement of the system itself. This is the correct result.
- Work implies a movement whereby the system must be mobile, it is not an option
- Pressure change. change in the system, but does not affect the environment
- Mass transfer is not possible in a closed system
After analyzing each option the correct one in B
Answers
Answer:
Net force= 14 units
The object is unbalanced
Explanation:
The net force refers to the sum of all forces applied to an object. However, the direction of force applied determine the net force. In this question, a boy and girl is pulling a heavy crate at the same time.
This means that the force is in the same direction, hence, the net force will be:
F(N) = 7 + 7 = 14 unit
However, since the pull is occuring at the same direction. This means that the object has a net force, therefore, will move in a particular direction. This means that the OBJECT IS UNBALANCED
Answers
initial angular speed is given by 33.3 rpm
final angular speed is given by 78 rpm
now by using kinematics we will have
b. how long does it take dave to cross the river?
c. how far downstream is dave’s landing point?
d. how long would it take dave to cross the river if there were no current?
Answers
a) Let's call x the direction parallel to the river and y the direction perpendicular to the river.
Dave's velocity of 4.0 m/s corresponds to the velocity along y (across the river), while 6.0 m/s corresponds to the velocity of the boat along x. Therefore, the drection of Dave's boat is given by:
relative to the direction of the river.
b) The distance Dave has to travel it S=360 m, along the y direction. Since the velocity along y is constant (4.0 m/s), this is a uniform motion, so the time taken to cross the river is given by
c) The boat takes 90 s in total to cross the river. The displacement along the y-direction, during this time, is 360 m. The displacement along the x-direction is
so, Dave's landing point is 540 m downstream.
d) If there were no current, Dave would still take 90 seconds to cross the river, because its velocity on the y-axis (4.0 m/s) does not change, so the problem would be solved exactly as done at point b).