Bright Academic Experts

Category: Physics

  • Lab 5 Gravity

    Create your Lab Report

    Requirements: 800

  • Lab 5 Gravity

    Create your Lab report based on your measurements.

    Requirements: 900

  • Newtons Third Law of Motion

    Complete the lab need lab supplies to do! please read attached materials!

  • Homework Ch 22 Cancelling Earths Magnetic Field with Two Co…

    • Solve the problem above by carefully following the instructions below.

    Learning Objectives

    • Resolve a magnetic-field vector into horizontal and vertical components.
    • Use superposition: Btotal = B1 + B2 + BE.
    • Use the magnetic field at the center of an N-turn circular coil: B = 0 N I / (2R).
    • Determine current directions using the right-hand rule based on the required field direction.
    • Present a clear, organized solution with correct notation, units, and significant figures.

    Notes: Convert Earths field into components: BEx = BEcos(61) (north), and BEy = BEsin(61) (up). To cancel Earths field, the coils must produce equal-magnitude components in the opposite directions.

    Grading Details (5 pts total)

    The following steps must be shown. Missing them will mean missing points.

    1. Vector Diagram
    • Draw the coordinate system: +x = North, +y = Up, origin at the center.
    • Draw and label B1, B2, BE for the respective vectors that all start at the origin.
    • B1 (field from coil 1)
    • B2 (field from coil 2)
    • BE (Earths field, tilted 61 above +x)
    • Since the total field cancels, draw the vectors with relative sizes that clearly show B1 + B2 + BE = 0 (like a free-body diagram, but with B-vectors).
    • Diagram requirement (very important): Do not redraw the coils. Instead, draw a clean vector-diagram at the center using a coordinate system where +x is North and +y is Up. At the origin, draw three magnetic-field vectors that all start at the origin and are labeled. Include the 61 angle on your diagram.
    1. General Formulae (Before Numbers)
    • Write the coil-center field formula: B = 0 N I / (2R).
    • Write superposition in vector form: B1 + B2 + BE = 0.
    • Write component equations: ?Bx = 0 and ?By = 0.
    • Clearly show that x component if each vector adds to 0, and do the same with y components.
    1. Symbolic Solve
    • Substitute the known and unknown quantities in symbolic form to the component formulas from the previous step.
    • Solve symbolically for currents: I1 and I2.
    1. Substitution and Mathematical Steps
    • Substitute the known values into the formulas you generated from the previous step.
    • Show intermediate steps (components first, then currents).
    • Include units throughout and keep the work neat.
    1. Final Answer + Clarity
    • No credit will be given for this step if steps 14 are skipped.
    • Box or highlight the final answers with correct units and appropriate significant figures.

    Submission Guidelines

    • Follow the page requirements (writing, color rules, single PDF, clarity, upload method).
    • Your submission must show the complete solution to this problem only. Ensure the uploaded file clearly displays the entire solution, with no steps cut off by page margins or poor image quality. Do not include unrelated material such as lecture notes, solutions to other assignments, or any extra work outside of this problem.
    • After you submit: Open Submission Details View Feedback to confirm the PDF is upright, readable, and properly framed. If not, re-submit before the due time. If resubmission is after the due dateeven if the initial submission was before itthe assignment will be considered late. I always grade the latest submission and ignore earlier ones.

    Late Policy

    • On-time: Submit by the Due Date No penalty.
    • Grace period: Between the Due Date and Available Until 10% deduction.
    • After Available Until: Assignment locks; no submissions accepted Score will be 0.
    • Grading: Homework is manually graded. Canvas may show 0 points until grading is complete; youll receive a notification when finished.

    Submission Quality Deductions (applied to total score)

    • Orientation/Legibility issues (rotated, upside down, too small/large, or blurry): 0.5 point each
    • Too small handwriting (to the point that makes it hard to read and/or requires the reader to zoom in): 0.5 point
    • Files added in comments or email (must be one PDF via the assignment upload only): 1 point (still must be before due date)
    • Color policy violations (e.g., red/pink used for work): 0.5 point
    • Did not verify submission (obviously unviewable PDF that a quick check would have caught): 0.5 point
    • Repeat Issues: If the same submission problems (e.g., orientation, file format, color policy, or verification issues) occur in future assignments, the deduction will increase by an additional 0.5 points for each repeated violation.
    • Unreadable or can’t be reviewed: If your submission is completely unreadable or cannot reasonably be reviewed, the entire assignment may receive a score of 0.

    All work and diagrams must be your own handwriting. Typed or copied solutions may be dismissed.

  • Physics Question

    Note: This week you will need a stopwatch. This can be either your phone, a physical stopwatch, or an online one. If you need an online one, simply Google “stopwatch” as Google has one built in to its site.

    Motion

    1. Select the tab labelled “Motion.”
    2. Play around with the simulation to get familiar with it.
      • Investigate and click around making sure you try everything out.
    3. Reset via the yellow reset button on the right side of the screen.
    4. Turn on “Speed.”
    5. At the same time, start your stopwatch and press the +50N button once.
    6. Stop your stopwatch when the speedometer maxes out.
      • Question 1: Describe the motion of the crate on the skateboard.
      • Question 2: How long did it take to reach maximum speed?
    7. Reset, and turn “Speed” back on.
    8. At the same time, start your stopwatch and press the +50N button twice.
    9. Stop your stopwatch when the speedometer maxes out.
      • Question 3: Compare the observed motion to your answer in Question 1: what changed? Why?
      • Question 4: How long did it take to reach maximum speed?
    10. Reset, and turn “Speed” back on.
    11. Stack any other item on top of the crate.
      • Question 5: What item did you pick? Why?
    12. At the same time, start your stopwatch and press the +50N button once.
    13. Stop your stopwatch when the speedometer maxes out.
      • Question 6: Compare the observed motion to your answer in Question 1: what changed? Why?
      • Question 7: How long did it take to reach maximum speed?
      • Question 8: By comparing your answers between questions 1, 3, and 6, are there any rules that you can suggest for the relationship between mass, force, and acceleration?
      • Question 9: Which of Newton’s laws did we investigate via this experiment?

    Friction

    1. Switch to the tab labelled “Friction.”
    2. Turn on both “Speed” and “Values.”
    3. Press the +50N button once and observe the values of the applied and friction forces, then press the +50N button a second time and continue observing the values of the applied and friction forces.
      • Question 10: What is the acceleration of the box? Why? How do the applied and friction forces compare?
    4. At the same time, start your stopwatch and press the +50N button a third time.
    5. Stop your stopwatch when the speedometer maxes out.
      • Question 11: What happened to the value of the friction force? Why?
      • Question 12: What is the new net force felt by the box?
      • Question 13: How long did it take to reach maximum speed? How does this amount of time compare to the time found in question 2? Does this difference make sense?

    Requirements: short answers

  • Unit and dimensions chapter short notes with pratice questio…

    Concise Physics Short Notes: Quick-reference guides covering core all topics , and modern physics. Includes key , shortcuts, and tips for fast revisionideal for exams, JEE/NEET prep, or last-minute study.

    Requirements:

  • Discussion

    Answer these problems for this discussion. Calculations and explanations should be given with the discussion and in discussion format. I have also attached a sample discussion of what it should be.

    Attached Files (PDF/DOCX): Sample Discussion Example.docx

    Note: Content extraction from these files is restricted, please review them manually.

  • The answer of some physics question

    What is the true nature of dark matter and dark energy?

    Answer: Dark matter is an invisible form of matter that does not emit light or energy, but it interacts gravitationally. It’s believed to make up about 27% of the universe. Dark energy is an unknown force causing the accelerated expansion of the universe, comprising about 68% of it. The exact nature of both remains largely speculative, with researchers still trying to detect and study them.

    How does quantum entanglement work, and can it be explained without violating local realism?

    Answer: Quantum entanglement is a phenomenon where two particles become interconnected in such a way that the state of one instantly affects the state of the other, even at great distances. This violates local realism, which assumes that objects are influenced only by their immediate surroundings. The entanglement does not allow faster-than-light communication, but it challenges our understanding of causality and the nature of reality.

    What happens inside a black hole?

    Answer: The interior of a black hole is a mystery, but we know that gravity is so intense that not even light can escape it. At the core lies a singularity, a point where density is infinite and the laws of physics as we know them break down. The event horizon marks the point of no return. We can’t directly observe what happens beyond the event horizon due to the nature of black holes, but the physics near it is a subject of intense study.

    Is there a unified theory of everything that can combine quantum mechanics and general relativity?

    Answer: The quest for a “Theory of Everything” (TOE) remains elusive. Quantum mechanics explains the behavior of very small particles, while general relativity explains gravity on a cosmic scale. The two theories are fundamentally different and incompatible in many ways. String theory and loop quantum gravity are two leading contenders, but as of now, no theory has been universally accepted.

    Can we ever reach or exceed the speed of light, or are there theoretical limits to this?

    Answer: According to current physics, specifically Einstein’s theory of relativity, nothing with mass can reach or exceed the speed of light. As an object approaches the speed of light, its mass increases, and the energy required to accelerate it further becomes infinite. Theoretical concepts like wormholes and tachyons (hypothetical particles that move faster than light) have been proposed, but they remain speculative.

    Requirements:

  • Requirements:

  • Discussion

    Answer these problems for this discussion. Calculations and explanations should be given with the discussion and in discussion format. I have also attached a sample discussion of what it should be.

    Attached Files (PDF/DOCX): Sample Discussion Example.docx

    Note: Content extraction from these files is restricted, please review them manually.