1. H

    Use Conservation of energy to solve projectile motion

    Hello, I’m working on this homework problem and am having trouble finding a way to explicitly solve for initial velocity. I got a hint from my professor that the final point should be at the top of the parabola, but I may have misunderstood him. We solved this using kinematics when we were on...
  2. L

    How to solve this question

    A football player kicks for a field goal 30.91m from the posts. The ball is kicked with a speed of 18.6 m/s at an angle of 45 degrees above horizontal a) how long will it take the ball reaches the posts b) how high will it be when it goes through the posts c) What is the magnitude of the...
  3. T

    How to solve this

    Hello sir How to solve this what is Van‘t Hoff factor?
  4. T

    Electric flux

    Hello sir How to solve this an electric charge of 8.85*10^-13 C is placed at the center of a sphere of radius 1m. The electric flux through the sphere is: 1. 0.2NC ^-1 m² 2. 0.1NC ^-1 m² 3. 0.3NC ^-1 m² 4. 0.01NC ^-1 m²
  5. T

    How to solve this

    Hello sir How to solve this The amount of work done in moving a charge of 10C from a point of 180 volts to another point of 210 volt is 1. 1800J 2. 300J 3. 3900J 4. 3000J
  6. I

    I can not solve this quantum harmonic oscillator question in Cohen's book

    If anyone can help me, I'm very grateful.
  7. A

    How to solve this throwing ball off cliff question

    Dear all, For b) I was curious why i couldn't use s = ut + 0.5at^2 as my equation as i had all the necessary known values.. instead to get the correct answer i had to use v=u + at why is this so. Thank you for your time Picture of Problem:
  8. A

    How to solve this tension question?

    Dear all, I am trying to figure out why the answer is T>W... do you have any idea why, if so could you please explain. Thank you. Picture of Problem:
  9. V

    how to solve Hamiltonian

    Respected Sir, tell me how we can solve Hamiltonian or Schrodinger equation. with regards vikas
  10. avito009

    Somebody solve this mystery for me.

    As I was explaining Newtons First Law. I said " An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force." Dan said "What if a person is inside the car and handbrakes aren't applied and he pushes the car from the inside, the force is internal...
  11. R

    How to solve this equation for tidal correction

    Hello everyone, I had been trying for days how to solve the following equation in Spreadsheet: using the dataset below: I am getting frustrated of myself for being so hard to learn. i hope somebody can help me get through this. thank you.
  12. F

    Interesting problem

    Hello, 1-st chapter (Axially loaded members) of the book. Problem: The long cable is suspended vertically and loaded with its own weight. What is the maximum possible Length of that cable at which it won't break, if the cable is made of steel with Ultimate tensile strength of 21,000 kg/cm2...
  13. S

    Can anyone help me solve this problem related to gear trains

    Im trying to solve this problem but just not getting it. Below is the problem.
  14. J

    Newtonian Mechanics : Block a wedge with no friction. How to solve for accelerations?

    A wedge with mass M rests on a frictionless horizontal table top. A block with mass m is placed on the wedge . The base of the wedge is at an angle of A degrees to the horizontal. There is no friction between the block and the wedge. The system is released from rest. Determine: 1) The...
  15. P

    Help to solve please

    An acrobatic airplane performs a loop at an airshow. The centripetal acceleration the plane experiences is 14.7 m/s2. If it takes the pilot 45.0 seconds to complete the loop, what is the radius of the loop? I posted this to Studydaddy and waiting for answer =(
  16. V

    how to solve Hamiltonian

    Respected Sir, in various physics article the given is Hamiltonian as like ( given i attached file for example ) and on solving we get energy is..... some time appears that answer is in air. so tell me how i can work in this area. with regards vikas
  17. M

    Super tricky thing i cant solve please help me!

    PLEASE HELP SOLVE THIS CRAZY RIDDLE. See picture attached.
  18. S

    Can you solve these GCSE level questions?

    i bet you try these gcse level question on your own without looking at the solution. try it u will fail. HD-h-bzvpbs
  19. X

    Some fun problems to solve

    Hi, the teacher gave me this problem to solve. So i hope you can help me with it. Here is the problem: John poured 150ml ob boiling water in 2 cups made out of polystyrene (no heat goes out). In 1 cup he add 5 mm thick layer of hot oil. He measured starting temperatures and then he measured...
  20. T

    Perturbation approach to solve attractive part of Lennard-Jones potential

    The text is taken from this site: I don't get the definition added just after (7). Where is it taken from and what does it mean? Why is it the energy? And can someone show the arithmetics and the fundamental principles on how to get from...