In music, relative keys are the major and minor scales that have the same key signatures (enharmonically equivalent), meaning that they share all the same notes but are arranged in a different order of whole steps and half steps. A pair of major and minor scales sharing the same key signature are said to be in a relative relationship. The relative minor of a particular major key, or the relative major of a minor key, is the key which has the same key signature but a different tonic. (This is as opposed to parallel minor or major, which shares the same tonic.)
For example, G major and E minor both have a single sharp in their key signature at F♯; therefore, E minor is the relative minor of G major, and conversely G major is the relative major of E minor. The tonic of the relative minor is the sixth scale degree of the major scale, while the tonic of the relative major is the third degree of the minor scale. The minor key starts three semitones below its relative major; for example, A minor is three semitones below its relative, C major.
The relative relationship may be visualized through the circle of fifths.
Relative keys are a type of closely related keys, the keys between which most modulations occur, because they differ by no more than one accidental. Relative keys are the most closely related, as they share exactly the same notes.
I apologize if this comes off as a dumb question, but does anyone know if gravity is ABSOLUTELY simply dependent on density alone, regardless of the type of material itself, or does the type material also factor into it's gravity?
Hello everyone! Something about speeds and how they're supposed to be relative has been bugging me for a while. I'm not particularly well-versed in physics, so if these questions make you cringe ... well, sorry about that. ;)
So here goes - it is said that speeds are relative, right? If you...
Equation of a Surface relative to the standard basis is
X1^1 + 2X2^2 + 3x^3 -4x1x2 -4x2x3 =0
Now the question ask to find the equation of above surface relative to the cordinate system with basis vectors
F1= (2/3,2/3,1/3)
F2= (1/3,-2/3,2/3)
F3= (2/3,-1/3,-2/3)
Now i found the transition...
as we know at zero degree temp. water condense to form ice. so what will be the relative humidity of a chamber at a temperature below zero degree temp.?
will it be nagative or what?
Homework Statement
Find constants a, b, and c such that the graph of f(x) = ax2 + bx + c has a relative maximum at (5 , 12) and crosses the the y - axis at (0 , 3).
Homework Equations
Not sure what to use
The Attempt at a Solution
-- i don't have one --
(This isn't a homework problem, just something I've been thinking about.) Suppose we have two planets isolated in space separated by a distance "D." They exert a gravitational force on each other which changes as they get closer. If we were in the accelerating reference frame of one of the...
A car travels due east with a speed of 55.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain with respect to the following reference...
Homework Statement
A particle as observed in a certain reference frame has energy 5GeV and momentum 3GeV. what is the energy in a frame in which its momentum is equal to 4GeV/c?
what is its rest mass?
what is the relative velocity of the two reference frames?
Homework Equations
The Attempt at a...
I explain my question through an example.
If we brought down a GPS clock, would it show the normal time, because it was accelerated before launch, but it has been slowed down by time dilation?
Or we have to accelerate those clocks in order to compensate for the time loss, till the signal from...
Two objects X and Y are moving away from Point P. The diagram I linked shows it.
It then asks us: Which of the following velocity vectors represent the velocity of X relative to Y.
The answer is B, but the same book told me in another part that we should subtract vectors to get the...
I think I may have asked this before, but I don't think I received a reply that made sense, at least to me.
Does the gravitational force between distant galaxies become larger and more significant due to their Relativistic Mass at high relative velocities and especially at luminal and...
Homework Statement
A man on a moving train throws a ball at a parked car. Find velocity of the ball when it hits the car if:
train is moving 21 m/s North East;
the man is walking 3.0 m/s [E35S] (relative to train)
ball is thrown 10.0 m/s [W22S] (relative to man)
Homework Equations
VBG...
I just read the following innocent sounding statement, which got me thinking:
"An electron in motion relative to an observer generates a magnetic field..."
This implies that, for an observer moving alongside at the same speed as the electron, there is no magnetic field. I understand the...
Would someone please correct my train of thought on this?
I understood that the Earth's position in the Solar System is related to the gravitational attraction between the Earth and the Sun. If this thought is correct, then when the Sun enters its Red Giant phase, the Earth should be pushed...
I am a piano teacher with some very cool, science-minded students. Usually we stick to basic acoustics, and mechanics in terms of piano technique, but yesterday one of them took things in an interesting new direction. . . he described to me how, when he closes his eyes and listens to the music...
Homework Statement
A plane has an airspeed of 200 mph. The pilot wishes to reach a destination 600 mi due east, but a wind is blowing at 10.0 mph in the direction 10.0 degrees north of east.
In what direction must the pilot head the plane in order to reach her destination?
______________...
consider a housefly in a car moving with a certain vel...how does it manage to move with the same speed as that of the car even though it isn't in contact with the car itself??...as in does it spend its own energy to move at quite high speeds (considering its small size and energy)??...
Relative Motion: moving sidewalk!
Homework Statement
An airport terminal has a moving sidewalk to speed passengers through a long corridor. Larry does not use the moving sidewalk; he takes 140 s to walk through the corridor. Curly, who simply stands on the moving sidewalk, covers the same...
Something must be wrong with my reasoning in the following thought experiment. Can someone, please, point out my error.
This thought experiment involves an empty cosmos which contains three space craft. Two of these, piloted by those intrepid adventurers Alice and Bob, are twenty...
Relative Velocity Problem -- find the angle
Homework Statement
An airplane has a cruising speed (speed of plane with respect to the air) of 547 mph. The wind is blowing at 84 mph 40° north of east. The plane needs to fly from Geordi to Data, which is 982 miles at 28° west of north.
Part A...
Relative Motion-- Airplane vs radar station and tracking the displacement
In Figure 4-49, a radar station detects an airplane approaching directly from the east. At first observation, the airplane is at distance d1 = 340 m from the station and at angle θ1 = 34° above the horizon. The airplane...
We have 3 points. O, P, Q.
OP = rP
OQ = rQ
but why is QP PrQ rather than QrP?
I'm just starting M4 and I really like to understand everything. This doesn't make any sense to me and I can't find out online. I'm sure there's a logical reason for it to be like that. Is it because you go...
Homework Statement
A plane flies at an airspeed of 250 km/h. A wind is blowing at 80 km/h toward the direction 60* east of north.
a) In what direction should the plane head in order to fly due north relative to the ground?
b) What is the speed of the plane relative to the ground...
Homework Statement
A boy is standing on a long railroad car throws a ball straight upwards.The car is moving on a horizontal road with an accelaration of 1m/s^2. and the projection velocity is 9.8m/s.How far behind the boy will the ball fall on the car.
Homework Equations
Not entirely sure...
This is not a homework question. I know the answer to this question I'm just not sure how, from reading the question, I would have known what the question is actually asking. If someone could explain what their thought process is after reading the question, and how it is that you know what the...
Homework Statement
Rocket A moves with speed .75c in a northerly direction relative to an origin. Rocket B moves west (relative to that origin) with speed .4c. As B moves, it emits radiation with a wavelength 100nm normal to its line of motion, in the northerly direction. What is the...
Homework Statement
One particle is shot in the x direction at speed u and a second is shot in the y direction at speed u as well. Show that the relative speed of one to the other is: u(2-(u/c)^2)^1/2.
Homework Equations
velocity addition: u = (u' +/- v)/(1 +/- u'*v)
Lorentz Trans...
One reference frame A uses a force F on another reference frame B.
Both A and B counts the time it takes before A stops using the force F on B. They end up with different results.
Will B feel a different value of the force coming from A?
Will F*t be different in the two reference frames? (Where...
I am reading the beginning of the chapter about Conjugated Unsaturated Systems and it is discussing relative stability of the allylic radical in comparison with other compounds.
This is what it tells me for the DH°:
Allylic Radical - 369 kJ*mol-1
3° Radical - 400 kJ*mol-1
2° Radical - 413...
Homework Statement
Conveyor belt A, which forms a 20° angle with the horizontal, moves at a constant speed of 4 ft/s and is used to load an airplane. Knowing that a worker tosses duffel bag B with an initial velocity of 2.5 ft/s at an angle of 30° with the horizontal, determine the velocity of...
Homework Statement
A particle of mass M = 7m decays into two particles of mass m - one travels in the '+y' direction, the other in the -y' direction.
In the rest frame of M, find the total energy(in terms of m) and the speed of each m. Homework Equations
E = mc2
\frac{u}{c} = \frac{pc}{E}...
[PLAIN]http://img811.imageshack.us/img811/4435/relativemotion.jpg
I'm having trouble on figuring out on how to go about this one.
I know that I have to use the kinematic equations for each dimensions, find time, and set the x components equal to each other, but the relative velocity of...
an aircraft must fly at a velocity of 150m/s[n35e] if there were no wind to reach its destination. a wind from the west of 25m/s is present for the whole flight. calculate the velocity the pilot must maintain to reach her destination in time. i started by finding the velocity of the plane in the...
Does special relativity hold between two inertial reference frames that are undergoing relative acceleration?
For example, consider two spaceships traveling toward each other on parallel (but not collinear) trajectories. They would pass each other at some non-zero distance, and thus their...
let's say a train is traveling at relativistic speed along a straight line to right, and a man is standing in the middle of the train.
Both end of the train was installed a gun which aims at the man. The right-ward gun aims at the man's leg and the left-ward gun aims at the man's head.
In...
Homework Statement
Einstein's E=mc2
Homework Equations
E=mc2,
mass dilation, relativistic energy.
The Attempt at a Solution
Does Einstein's E=mc2 involve mass and energy as relative values? or does the equation mc2=moc2+Ek ie: the same eqn just with mass dilation and...
Homework Statement
See figure attached,
Homework Equations
The Attempt at a Solution
Isn't the Maclaurin series just simply the Taylor series around 0?
(\text{i.e. } (x-c), \quad c=0, \quad x )
Also for part B, how do we go about solving for | \epsilon_{t} |?
Thanks...
While playing a rousing game of Dungeons and Dragons, we came upon a strange question that I thought might best be answered by the fine people at these forums.
A tree polymorphed into an arrow, when fired from the bow will transform back into a sharpened log. What then happens to the speed of...
Is this a paradox?
We have a satellite orbiting at a significant amount of the speed of light around the earth.
Hypothetical numbers:
The satellite ages 6 years;
while the;
earth ages 7000 years.
How does the satellite communicate with Earth or vice versa? How is information...
Homework Statement
Two particles are emitted from opposite ends of a linear particle accelerator, one with a speed of 0.5 c and the other with a speed of 0.6 c, relative to the accelerator.
What is the relative speed of the two particles?
Homework Equations
VPE = VPA + VAE
The...
I saw a MIT course on YouTube where the well know professor say that if I augment the height per 10 the strength augment by 100 (square) but the mass by 1000 (cube) so an animal would be 10 time relatively weaker if 10 time taller so he explain there is a limit to animal size because of this. He...
Unstable molecules - is the instability "relative" to environment?
There are many highly unstable chemical configurations. Most chemicals, after all, would prefer to move from high-energy states to low-energy states. This is usually possible due to the presence of a reaction pathway that makes...
Homework Statement
At noon, ship A is 150 km west of ship B. Ship A is sailing east
at 35 km
h and ship B is sailing north at 25 km
h. How fast is
the distance between the ships changing at 4:00 P.M.?
Homework Equations
The Attempt at a Solution
I did it using geometry and...
Homework Statement
The bar AB is rotating with an angular velocity w=10rad/s. Determine the velocity of the piston C at the instant θ = 45. Provide the vector solution and the solution with the instantaneous center of zero velocity
Homework Equations
Vb = Va + w x r(b/a)
Vc = Vb + w x...
If i am moving at a constant speed and i see someone moving towards me , According to relativity i can't tell if I'm moving or they are moving. But if the heavier person is moving towards me they would have more kinetic energy and a stronger gravitational field, then if i was moving and they...
This is a practice question.
If somebody could help me with this practice question, I'd really appreciate it.
Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south. Neil is in front of her and to her left. With respect to the ground...
No, the boundary operator is not relative--sorry, Einstein . I mean,
the boundary operator in relative homology.
I have seen it defined in two different ways , which I do not
believe are equivalent to each other:
Given a pair (X,A), A<X, and Del is the Bdry. operator on...
Hi folks, can someone please point out how Atkin got the following relative velocity A-B equation: see attached file. It's in atkin pchem 9e page 834.
Thank you all.
Homework Statement
A 50 kg person walks across a 250 kg raft at a constant speed of 2m/s. What is the velocity of the raft relative to the water?
Homework Equations
The Attempt at a Solution
Let m = mass of the person
M = mass of the raft
v = velocity of the person relative to...
I just noticed an item in Ned Wright's "News of the Universe" about a new determination of the solar system's speed. It is roughly what we've been saying, around 370 km/s in the direction of constellation Leo, but this paper determines it with increased precision...