1. J

    Subatomic particles to a solid object

    Per quantum physics, the position of a particle is given by a probability function. When such particles make up a higher order system of molecules and crystals, is it reasonable to say that the existence of such a system is also non-deterministic because of the underlying non-deterministic...
  2. J

    Python script to find drag force on a 2D object given differential pressure vectors

    I am in need of a python program to calculate the drag force on a 2D object, given differential pressure acting on the object-- this will have to be calculated either manually or (hopefully) by the code. I have the exact location of each pressure vector via a .dat file, and would like to know...
  3. P

    Do all object really fall at the same rate regardless of mass?

    Ive always had this question in the back of my mind? Do all objects fall at the same rate regardless of mass? This theory has been tested many times. I just watched a video on youtube where they dropped a bowling ball and a feather at the same time in a giant vacuum chamber. As predicted, they...
  4. A

    Finding density of an object with the weight and density of fluid?

    Hello, I am a bit stuck with a question "A large container of water initially reads 0.485 kg. A ball is hung in the air from another set of scales which initially read 0.112 kg. The ball is lowered until it is fully submerged. The readings on both scales are now 0.496 kg and 0.101 kg...
  5. S

    Time required to cool an object using a fan

    Hello, A flat object with a known surface area is at a temperature of 285F. The ambient temperature in the room is 80F. The object needs to be cooled down to 100F within a time limit of 5 minutes. To accelerate the heat transfer process, there is a fan in the setup. The objective is to...
  6. I

    Object and bead on a pulley

    Need help with this excercise. There is a pulley. On the left side hangs object of Mass M and height L. On the other side a bead of mass m slides down the rope. After release from rest, bead passes the Object in time T. What is the friction force (lets call it "P") of the bead? What is...
  7. J

    Force on object moving on a curve

    I'm not sure how to approach this problem. We never went over problems like this in class.
  8. E

    Measuring the distribution of mass in a solid object

    I am interested in measuring the distribution of mass in a solid object, specifically a tennis racket. Is there a simple way to do this? I only need to know the approximate distribution of mass along the length of the racket, which is 68.5 cm. So, for example, I could cut the racket into...
  9. S

    Required force to move the object

    Hi Woody, I want to calculate the required force to move the object (70 Kg) for 1 sec at 22.22 m/s2. What is the distance traveled by the object for 1 sec at the same acceleration? 1. A Vehicle running at uniform velocity of 80 KMPH (50 MPH) i.e 22.22 m/s. 2. No acceleration since...
  10. B

    Falling object force for starting lever

    I need help understanding how to calculate force from a falling object. I have a lever connected to a spring and I want to know the amount of force on the other end of the spring. If I have a model with a force F that pushes on the first end of the lever (the spring is attached to the other...
  11. A

    AddForce issue after rotation of the object axis

    Hi, I'm new to unity, and I am trying to create a simple game where a cube moves and jump around a field. I encountered a problem, sometimes, when the cube jumps and moves he flips and he falls facing the ground with another face than the starting one, this creates a problem when I use the...
  12. D

    Calculating g with time intervals of thrown object.

    At the National Physics Laboratory in England a measurement of the gravitational acceleration g was made by throwing a glass ball straight up in an evacuated tube and letting it return, as shown in the Figure. The time interval between the two passages across the lower level is equal to ∆TL =...
  13. J

    Object thrown off a balcony

    Hi, I've been here a lot lately, and I appreciate everybody's help. My lesson text has various errors in this lesson, and a lot of it is very unclear. It is really affecting how well I am learning the material, and it's hard to tell when I am correct or incorrect. Anyways, I'll stop...
  14. avito009

    Kinetic energy relation to mass of an object.

    I will tell you what i understand and correct me if i am wrong. Anything with mass cant travel at the speed of light because at the speed of light mass would become infinite since infinite kinetic energy is required to make mass travel at speed of light. My question is that: Why do we...
  15. R

    question about the force of an object hitting another

    if you have scenario A)a flat square or flat circular object, and it moves in a straight line, towards an object e.g. a ball. vs B)A flat square or flat circular object, moves in a straight line towards an object e.g. a ball (so same so far), but also, the flat object is spinning in the Y...
  16. G

    Object dropped from a plane

    Hi all, I have a very simple question. Will an object dropped from a plane moving at a constant velocity EVER ACHIEVE PURELY VERTICAL MOTION? (Make sure we're not taking air resistance into account) Thanks
  17. N

    Is it possible to combine invisible EM waves together to pass through a object, while

    Is it possible to combine invisible EM waves together to pass through a object, while also making the electrons in the object absorb, and? -emission. So the invisible electromagnetic waves are mixed together, you could mix up to 4 together, and adjust the wavelength, and frequency to be just...
  18. L

    Stability of object

    is it necessary to find the meta center for this question ? the formula of meta center is I /Vd , the I ( moemtn of inertia ) for rectangle is (ab^3) / 12 , but what is a ? what is b ? i'm confused now ρ gVsubmerged = weight(579N) 1025(9.81)Vsubmerged = weight(579N) Vsubmerged = 0.058m^3...
  19. timemachine2

    Think about this deeply, could any object become invisible/translucent if the eV of e

    of silicon, sodium, and calcium do not excite electrons to higher shell levels, and there is no absorption, and emission in glass. Then in SOLID Carbon, and hydrogen, and helium, which are elements in the human body. If X-rays excited electrons in these elements to higher shell levels, shell 1...
  20. P

    Find the height and the velocity of the object

    A bolt is detached from the lower part of an elevator cabin that is ascending with velocity 6meters/second and for 3 seconds comes to the point from where the elevator started to ascend. Find: in which height is the end of the elevator in the moment when from it the bolt was detached. What is...