How is energy transferred among particles of a body when we give some kinetic energy to it?
Why isn't temperature frame dependent?
I was born in Brazil and came to the United States at the age of 7, in 2007. I no longer need to live in the United States because I have found success in investing and no longer depend on having a job. I am going to buy property in my home country soon, but I have just turned 18.   Will I ever be able to return to the United States to see my friends and other family members? Even if it is a 30-day visa? And, if so, in the future, am I still eligible for the EB-5 visa? Will I be barred from entry? What is the simplest way to generate a dodecahedron? I've been thinking of animating some dice and while most are easy to make, I'm having some trouble figuring out a way to generate a regular dodecahedron. I could hand build it but it would be potentially uneven. Would using the base of a 5 sided cylinder and then some variation on spin be the best option or is there a better way? I'm having trouble solving a Fitch Style Proof and I was hoping someone would be able to help me.  Premises: p ∧ q  Goal: q ∨ r  Would be an assumption (p ∧ q => q ∨ r) in first step a correct one?   Then, q ∨ r Implication Elimination: 2, 1  Why is it not correct?  Thank you very much for any help! Recovering added/staged file after doing git reset --hard HEAD^? Series of sequence with terms over series. Prove or give a counterexample to disprove the following statement about series of real numbers:  If $a_k &gt; 0, s_k = a_1 + \cdots + a_k$ and $b_k = a_k/s_k$ then $\sum a_k$ and $\sum b_k$ either both converge or both diverge. Methods to work around the problem of missing data in machine learning Virtually any database we want to make predictions using machine learning algorithms will find missing values ​​for some of the characteristics.  There are several approaches to address this problem, to exclude lines that have missing values ​​until they fill with the mean values ​​of the characteristics.  I would like to use for a somewhat more robust approach, which would basically run a regression (or another method) where the dependent variable (Y) would be each of the columns that have missing values ​​but only with the rows of the table that contain all the data , and predict the missing values ​​with this method, complete the table by the table and move to the next 'column' with missing values ​​and repeat the method until everything is filled.  But that gives me some doubts.  Why any column start? I believe that the one with the smallest missing values ​​until the one with the most  Is there any threshold of missing values ​​that is not worth trying to complete it? (for example, if this characteristic only has 10% of the values ​​filled would not it be more interesting to exclude it)  Is there any kind of implementation in traditional packages or other methods that are robust to missings? Conventional parenting wisdom tells us to drive the fear of talking to strangers into our kids. Is this at all harmful though? Is there any adverse impact to a child's social development by doing this? How can you balance safety against fear? We have $n$ charged and $n$ uncharged batteries and a radio which needs two charged batteries to work. Strange directory under C: of Windows 7 Here is my player code.  Rigidbody rb;  Vector3 currMovement; public float jumpSpeed = 10; public float moveSpeed = 10; public float rotSpeed = 180;  float distToGround;  public float posSmoothTime = 0.5f; float currPos; float targetPos; float posVel;  public float rotSmoothTime = 0.5f; float currRot; float targetRot; float rotVel;  void Start() {     rb = GetComponent&lt;Rigidbody&gt;();     distToGround = GetComponent&lt;Collider&gt;().bounds.extents.y; }  bool isGrounded() { return Physics.Raycast(transform.position, Vector3.down, distToGround + 0.1f); }  void Update() {     Move(); }  void Move() {     // Rotation smoothing.     targetRot = Input.GetAxisRaw("Horizontal") * rotSpeed * Time.smoothDeltaTime;      if (targetRot &gt; 360)         targetRot -= 360;     if (targetRot &lt; 0)         targetRot += 360;     currRot = Mathf.SmoothDampAngle(currRot, targetRot, ref rotVel, rotSmoothTime * Time.smoothDeltaTime);      transform.eulerAngles += new Vector3(0, currRot, 0);      // Movement smoothing.     targetPos = Input.GetAxisRaw("Vertical") * moveSpeed;      currPos = Mathf.SmoothDamp(currPos, targetPos, ref posVel, posSmoothTime * Time.smoothDeltaTime);     currMovement = new Vector3(0, 0, currPos);     currMovement = transform.rotation * currMovement;      if (isGrounded())     {         if (Input.GetButtonDown("Jump"))             rb.velocity += Vector3.up * jumpSpeed;     }      rb.position += currMovement * Time.smoothDeltaTime; }   I have a Rigidbody attached to my player. I think the problem is with my camera script. Here is my camera script.  public Transform player; Quaternion targetLook; Vector3 targetMove; public float smoothLook = 0.5f; public float smoothMove = 0.5f; public float distFromPlayer = 5, heightFromPlayer = 3; Vector3 moveVel;  void LateUpdate() {     CameraMove(); }  void CameraMove() {     targetMove = player.position + (player.rotation * new Vector3(0, heightFromPlayer, -distFromPlayer));     transform.position = Vector3.SmoothDamp(transform.position, targetMove, ref moveVel, smoothMove);      targetLook = Quaternion.LookRotation(player.position - transform.position);     transform.rotation = Quaternion.Slerp(transform.rotation, targetLook, smoothLook); }   }  The player is not an parent of my camera. When I parent the player to my camera the shake stops. But I want a custom smooth camera movement with my custom scirpt, so I can't make the player a parent of the camera. What is "root" and how can I become it? When I ran a command, I got the following error:     You need to be root to perform this command.   What is root and how can I become it? In the last episode of season 7, The Doctor goes into his timeline to save Clara. It ends when they see his war regeneration and Clara faints. Did I miss a special episode between that one and the 50th anniversary special? Because they never explained how they escaped his timeline. How do you become a vampire/werewolf in Elder Scrolls Online The game is released for a few days now. I have heard that you can turn into thoses beasts. I have a few questions about that   How do you turn into werewolf/vampire ? On the chat people said they can bite others but who bite them first? How long does the effect last ? Are there any cons ? Maybe if your are a vampire you take damage from the sun like in older Elder Scrolls ? How to find the roots of $x^4 +1$ I'm trying to find the roots of $x^4+1$. I've already found in this site solutions for polynomials like this $x^n+a$, where $a$ is a negative term. I don't remember how to solve an equation when $a$ is a positive term as the equation above.  Thanks For a CDF that is not strictly increasing, i.e. its inverse is not defined, define the quantile function   $$F^{-1} (u) =\inf \{x: F(x) \geq u \},\quad 0&lt;u&lt;1. $$  Where U has a uniform $(0,1)$ distribution. Prove that the random variable $F^{-1} (u)$ has cdf $F(x)$.  In case of a strictly increasing CDF the proof is quite easy because the inverse is defined. Define $X=F^{-1} (u)$  $$ P\left[X&lt;x \right]=  P \left [F^{-1} (U) \leq x \right]= P \left[U \leq F(x) \right] =F(x)  $$  But how do I accomondate the nondecreasing CDF whose inverse is given by the quantile function? I am a begginer so any help is welcome. Thank you. How to generate a chirped signal On freedom in Sartre's existentialism I am reading "Existenstialism is a humanism", the text of the famous conference by Sartre in which he explains his own version of existentialism. I think is full of logical inconsistencies, but maybe it's just because I don't understand it or I don't know enough about existentialism. Anyway, my question is about a specific passage. After having "demonstrated" that there is no way one can derive an ethics outside of Man (God does not exist and reason is insufficient), he asks himself according to what principle a person should behave and he says:     "For I declare that freedom, in respect of concrete circumstances, can   have no other end and aim but itself; and when once a man has seen   that values depend upon himself, in that state of forsakenness he can   will only one thing, and that is freedom as the foundation of all   values. That does not mean that he wills it in the abstract: it simply   means that the actions of men of good faith have, as their ultimate   significance, the quest of freedom itself as such."   So it seems Sartre says that when deciding a course of action, people will always choose "freedom," (and also, elsewhere, that "freedom" is always a good thing). That is for him the only principle, the only moral that governs or should (because we can do wrong judgments about what is freedom) govern our action.  My questions are:  1) do I understand correctly Sartre's thinking?  2) He says: a) freedom is absolute; b) the values that man chooses are also absolute because no God or reason can tell him what to do, c) therefore man will choose freedom. Is there any logic in this statement? If I replace freedom with X where X is "pleasure" or "justice" or "pain" or "zero temperature", wouldn't I "demonstrate" by this logic that man will choose X?  3) assuming what I said makes any sense, how can existentialism ever find a rule of moral conduct? and if it does, what is it and how can be demonstrated? and if it cannot, why is or has been important at all as a philosophy?  Thanks! On thanksgiving day a woman posted in a facebook group that her father had just passed away (left her money) and in good deed because it was thanksgiving she was offering to pay people’s debts. Well I inboxed her and she pretty much wants me to open up a bank account with First Tech Credit Union and give her my log in and password info. Ofcourse its sketchy!   So I questioned her and asked why she wanted that instead of her sending me the money directly from her bank to mine. She then responded because she wants to keep records of my debts. (She asked for proof and I sent her screenshots ONLY of my outstanding balances) I heard about the depositing checks scam so I questioned her about how she would deposit the funds and she said cash.  Her facebook page is 100% legit, I screenshotted her pics and family profiles etc. We came to an agreement that I would only accept her help if she sends me a picture of her ID before me sending this info.   She literally just wants to deposit the money to me, She isn’t asking me to send nobody money from that account or anything. Of course the account will be empty when I provide it to her. When she does deposit the money I am planning to immediately change the password and obviously stay watching my account activity while she deposits the funds.   She actually also provided pics of other accounts she funded. My question is, is this a scam? And if so how could she possibly scam me? Specially if i have her information and A pic of her ID. She is a christian lady and looks like she has a good heart, We talked about my struggles and she actually looked into why I needed to be assisted with the money. By no means was she pushy or anything. I want to believe that she just wants to help me but I am also too skeptical. Is there a simple way to convert C++ enum to string? Using the same RSA keypair to sign and encrypt The RSA signature operation is basically the same as encrypting with the private key.  In particular, both operations use the same kind of keys.  Is it safe to use the same RSA keypair both for encryption / decryption and for signing / verification?