Degrees Definition and 679 Threads

Hi! I need help with a task. I have done previous calculations on the shaft, but I'm stuck now, as I'm going to find out how many degrees the shaft is twisting from point C to D. I have calculated bending/shear stress, torsion stress and the last stress that i don't know in english, but the...

Why does Celsius degrees have +/- signs, since it's scalar?

Hopefully someone can help me with finding the answer to the 2 related questions/problems below: QUESTION/PROBLEM how long will it take a 200 gallon tank of water to warm up to 70 degrees Fahrenheit, in a room with an ambient temperature = 80 degrees Fahrenheit with 50% relative humidity? how...

Assumptions: 200+ years from now Asteroids have been moved to all Lagrange points, and at least 90, 180, and 270 degrees on Earth's' orbit for mining, and shielding humans and equipment Tech to acceleration/decelerate at 1 gravity without need to carry fuel. (My main fiction.) Direct line of...

It's an interesting article just published in Nature: https://www.nature.com/articles/d41586-018-07848-2

Triangle ABC has area 25*sqrt(3). if Angle BAC=30 degrees, find |AC|=|BC|=? the answer I got was 10*4th root(3) Is this correct? I am asking because someone other than my professor wrote the study guid for us for the final and I am not 100% sure what |AC|=|BC| means as my professor never...

How do I determine the degrees of an angle if I three X and Y coordinates? I honestly just need a formula to plug into some code. Thank you in advance.

I'm looking for a little help here. I'm just a relatively regular Joe here though, so any complicated formulas are likely to go right over my head. What I'm trying to do is use the Ruby programming language to convert rise and run (slope) to degrees. See the attached screenshot... Assume x...

Hello. I will be grateful for your help in finding the logical meaning of each part of the formula of degrees of freedom, which are computed for a t-test when variances are unknown and are assumed to be unequal. Please, take a look at the formula, the way I managed to understand some parts of...

I see a lot of ambiguous explanations of degrees of freedom on the web and I need clarification. Suppose there is an object in space that can move freely along either the x,y, or z axis. Do we say it has six degrees of freedom because it can move along the x-axis one way or the opposite way...

Find a polynominal function f(x) of least degrees having only the real coeficents and zeros as given $$5+i \quad 4-i$$ ok I did this but don't think this is the final answer $(x-(5+i))(x-(5-i))=x^2+26$ $(x-(4-i))(x-(4+i))=x^2-17$

Homework Statement A 80kg skier has a force of 200 Newtons exerted on him down a slope. Assess whether the slope is less than or greater than 45 degrees. Homework Equations Weight = mass times acceleration due to gravity The Attempt at a Solution The vertical component of his weight is 800...

Homework Statement Projectile motion I have an an object that is shot at an angle of 55 degree's. (the velocity listed next to it was 35 m/s, which was not listed as Vo but I think I have to assume it is?) It is launched from the ground. it is meant to land to hit a button that is elevated by...

Homework Statement There is some current in the bottom coil. The question asks which would not be able to light the lightbulb - rotating the insulating handle 90 degrees - increasing resistance of variable resistor -reducing resistance of variable resistor - moving the insulating handle...

This may be better suited in the academic forum, or possibly not even the normal type of question asked, but I was just judging based on other similar posts. I just graduated from college this past spring with a BS in Applied Mathematics and a BS in Physics, as well as a minor in computer...

So I'm looking to do a bachelor's degree which involves a lot of physics and math but one that is not engineering, maybe like a BSc in physics? Idk Anyone got any suggestions?

Since it shows back bonding, shouldn't it be a little more than that?

As I’m doing more research and talking to my college advisor I learned that I don’t need a master’s degree to get into grad school and earn a doctorate, and that my field of study (Biomedical Physics) has various common classes with the Advanced Physics major. Would it be worth more to take an...

One day consists of slightly more than 360° of rotation (360.9856°) on it's axis (due to Earth's orbit around the Sun). I imagine that one orbit is also either > or < 360° around the sun, relative to the motion of the sun around some object. Is this true, or is the orbit of the Earth...

Homework Statement Cos(330 degrees) *No calculator Homework Equations (a^2)+(b^2)=(c^2) Cos=(delta x / hypotenuse) The Attempt at a Solution Hi guys, so today at school, the teacher was doing a problem which stated to solve the cosine of 330 degrees. The teacher used the conjugate angle...

Homework Statement Homework EquationsThe Attempt at a Solution Considering the molecule as collection of two spherical atoms whose centers are joined such that they touch each other, Then, as a rigid body the system has 6 degrees of freedom and around the axis joining the two centers, the...

Homework Statement A plane, diving with constant speed at an angle of 53 degrees with the vertical, releases a projectile an altitude of 730m. The projectile hits the ground 5.00s after release. A plane, diving with constant speed at an angle of 53 degrees with the vertical, releases a...

Homework Statement In triangle ABC AC= 9cm, BC=5cm and angle ACB = β in degrees. Given that cos2β=0.84, determine (i) the exact value of sin2B (ii) the value of β if 90°<β<180° (iii) the length of AB Homework Equations sin2θ+cos2θ=1 The Attempt at a Solution Using that equation In relevant...

In practical terms, what quantum theories can be applied to the mediating forces of interacting particles so as to permit degrees of freedom in excess of 3D space? For example, could an inner product of scattering theory be extended to a higher dimension of Hillbert space so as to define...

Quantum decoherence means that when a quantum system interacts with its environment, coherence is lost, which means that all the density matrix becomes diagonal after the interaction. I never understood why it is so, but I get a clue here...

Homework Statement https://i.imgur.com/UtLzb34.png Homework Equations the law of cosinus The Attempt at a Solution I have not been available to scan my work, but I'm kinda stuck at the beginning. And our teacher have not show us this kind of physics yet. Thanks.

Like we write "R+jX" where jX is considered to be imaginary term and it said to have 90 degree phase shift.

Good day I have issue to understand why in the second case we still have 1 degree of freedom, because according to my understanding ( the circles for me represent the trajectory of the rotation of the two segment, and according to it the two segments can't rotate simultaneously. but according to...

Hi, I'm studying Sync Generators. In one problem I got Ia as 1.59 angle of -159.9 degrees. How do you calculate power factor for such a current? Book says Ia leads Terminal Voltage by 23.13 degrees. I guess they got that value by 180 - 159.9 But why?

Homework Statement A 400N trunk is on a 20 degree inclined plane and has a coefficient of kinetic friction of 0.56. What force must be exerted on the trunk to make it slide down the plane at a constant velocity? Homework EquationsThe Attempt at a Solution I have drawn a free body diagram of...

I'm a mother of young children with a bachelor's in Physics and a master's in Electrical Engineering. I can't work full-time and commute right now, so I want to take some courses to position myself to get into an industry that would allow me to work from home most of the week. Other than...

Recent info on the best paying degrees, PF mentor didn’t make the cut this year @Greg Bernhardt http://www.bbc.com/news/education-41693230

I have to present a topic "Good coordinates and degree of freedom" I know what are good coordinate and degree of freedom. but I will have to explain examples/question given below(from Liboff's text) I know the answer to all of them but I really do not know how to explain these how will I explain...

I'm having a hard time understanding 'degrees of freedom'. Could someone please provide an example in terms of Quantum Mechanics about what a 'degree of freedom' could be represented as? Is it simply a number of observations of a physical system to determine the arrangement of particles within...

A massless spin 1 particle has 2 degrees of freedom. However, we usually describe it using four-vectors, which have four components. Hence, somehow we must get rid of the superfluous degrees of freedom. This job is done by the Maxwell equations. To quote from Gilmore's "Lie Groups, Physics, and...

How can I calculate the effective degrees of freedom when linearly combining dependent sample variances? I know that the Welch–Satterthwaite equation exists, but that is for combining independent sample variances. Is there an equivalent expression for dependent sample variances? . Example...

I ran across this table that lists the % of engineering and cs degrees awarded to women by school in 2014-2015. You can sort on any column, ascending or descending. http://apps.washingtonpost.com/g/page/local/women-in-engineering-and-computer-science/2089/?tid=a_inl-amp This was useful to...

Hi everyone! I've got a question about recognition chances of my German degrees at Canadian grad schools. Ideally there would be people out there who did their Bachelor+Master in Germany or in a country with a similar academic system (3+2 years, Master as a precondition to Ph.D. rather than an...

Hello, I am currently in India and have completed the standard 12 years of schooling and eventually want to get into Physics academia and research. Now I currently have a choice between a three year standard science degree(BSc honours in Physics) and a four year engineering degree(BTech in...

I am trying to understand how to decide the number of degrees of freedom when calculating a chi-squared and p value. I have the data: England: people with no pets = 665 people with 1 pet = 976 people with 2+ pets = 913 Scotland people with no pets = 313 people with 1 pet = 527 people...

This might be a bit of a silly question, but it's been driving me nuts for a couple of hours now. Background first: I'm reading Serway's Physics for Scientists & Engineers, Vol 2 Ed.8, and I'm currently in the Optics Chapters (light and whatnot). In O3.3 (O3 is generally about light going...

The hottest planet yet is twice Jupiter’s size and hot as a star by Leah Crane Link: New Scientist This planet is 7800 degrees F--versus "only" 860 degrees F for the Sun's hottest planet, Venus.

Reduce the following numbers of radians to degrees, minutes, and seconds. (a). 0.47623. (b). 0.25412. Can someone work out (a) in steps? I can then use it as a guide to solve (b).

Express the following angle in radians. 12 degrees, 28 minutes, 4 seconds that is, 12° 28' 4". I cannot apply pi/180° to this problem.

Express the following angle in radians. 12 degrees, 28 minutes, that is, 12° 28'. I cannot apply pi/180° to this problem.

I'm trying to code a script for a character in my game. This will tell the character if the player is in front or behind them. Basically I know the coordinates of the character and their angle of rotation (if rotated 45 deg, that is where they are looking) Perpendicular to their angle is a...

As I understand it, the classical source-free electric, ##\mathbf{E}## and magnetic, ##\mathbf{B}## wave equations are solved by solutions for the electric and magnetic fields of the following form: $$\mathbf{E}=\mathbf{E}_{0}e^{i (\mathbf{k}\cdot\mathbf{x}-\omega t)}$$...

how many degrees of freedom swan's neck have

Is there a single optical component that will do the following? Do nothing to the horizontally polarized input, but rotate the vertically polarized input by 90 degrees, so that both beams finally emerge with the same polarization? I am looking for a single element that will replace the...

Hi I am planning on building an immersion heater to heat oil when it is -20 C degrees outside. I need some help calculating the heat transfer. I want to find out how long it would take to heat around 10 litres of oil from -20 degrees to 10 degrees using an immersion heater with a constant...