# Search results

1. ### Hookes law

Homework Statement Hi Can anyone please help with this question? A light elastic string AB has natural length l and modulus of elasticity 2mg. Another light elastic string CD has natural length l and modulus of elasticity 4mg. The strings are joined at their ends B and C and the end A...
2. ### Tension in a string simple pendulum

Yes. That is my assumption. I have a feeling it may not be valid. Is tension equal to the weight at the point of rest?
3. ### Banking on race track

Thanks a lot. It did become an albatross. But I am slowly conquering my demons.
4. ### Uniform Circular motion

Thanks everyone. It has become clearer.
5. ### Banking on race track

Homework Statement Can anyone explain the above concept in a concise manner? I am proposing that banking aids motion at maximum speed on a curved surface. I am not totally sure how to include the role of side friction and centripetal force. Any further suggestions would be appreciated...
6. ### Tension in a string simple pendulum

Homework Statement Hi Guys I obtained a slighty different answer. Can anyone kindly verify where I am going wrong? The question is stated thus: A simple pendulum is of length 0.5m and the bob has mass 0.25kg. Find the greatest value for the tension in the string when the pendulum is set...
7. ### Uniform Circular motion

Homework Statement Hi Can anyone help with this question? It will be highly appreciated. An object of mass 6kg is whirled round in a vertical circle of radius 2m with the speed of 8m/s. If the string breaks when the tension in it exceeds 360N, calculate the maximum speed of rotation and...
8. ### DeMorgans Law using NAND gates

Thanks for a response. I am okay with the maths but unsure about the actual diagram. Any pointers? Thanks.
9. ### DeMorgans Law using NAND gates

Homework Statement Hi I am struggling with the diagram of this question. Can anyone help? I would have loaded my diagram but unsure how to do it. This is the question: Starting with the following statement (A+B).(A+C), show how this can be implemented using NAND gates using DeMorgans law...
10. ### RLC Parallel circuit

Thanks a million. You are amazing! I might some other. Hope it's okay to let you know. Cheers!
11. ### RLC Parallel circuit

Thanks for your help. I mislead you about the diagram. The inductor, capacitor and resistor are all in parallel with the supply voltage at the bottom of the circuit. Does this clarify matters? I apologize for not presenting a diagram.
12. ### RLC Parallel circuit

Yes. That's what my circuit looks like. I have done complex numbers in my maths class. Is my solution on track? Please let me know.
13. ### Capacitive reactance

Thanks everyone. I take that as a yes! My sincere appreciation and gratitude.
14. ### Capacitive reactance

So, my final answer is in ohms and negative. Aside from that, is my working okay? I feel its fine but its the determinant for a distinction or a merit. Thanks.
15. ### RLC Parallel circuit

Homework Statement Hi Can a kind person please check my solution? This is the question: Demonstrate the total current in an RLC parallel circuit using the following circuit. I cant draw it but the inductive reactance is 20ohms, capacitive reactance is 5ohms and resistor of 10ohms. All are in...
16. ### Capacitive reactance

Homework Statement Now demonstrate how to calculate resonant frequency. Calculate the capacitive reactance for a 300uF capacitor in series with a 800mH inductor. Homework Equations f = 1/2pi(LC)^1/2 Xc = -1/2pifC Hi I urgently need this solution checked out for my BTech...
17. ### Momentum and hammer

Homework Statement Hi All Just need some clarification on this problem: In splitting logs with a hammer and wedge, is a heavy hammer more effective than a lighter hammer? Why? Homework Equations F = ma M(v-u)=Ft The Attempt at a Solution I would state that the smaller hammer...
18. ### Sketching y^2 = X^3

Homework Statement Hi everyone, I am not sure how to sketch this: y^2 = X^3 I have a feeling it will form a parabola. If I find the square root of both sides I get: y = X^3/2 Differentiating gives me dy/dx = 1.5X^1/2. Kind of stuck from here. Please help. Homework...
19. ### Simple harmonic motion in a string

Thanks a lot guys! Sorry for late reply.
20. ### Simple harmonic motion in a string

Homework Statement Hi I need some clarification on this question A light elastic string of natural length 50 cm and modulus 20 N has one end fastened to O on a smooth horizontal table. The other end has a particle of mass 0.4 kg attached to it and the particle is released from rest at a...
21. ### Normal distribution table values

Homework Statement Hi I need a clarification before my S2 exam on Thursday. How do I find a value of P(Z<0.7925)? This is bearing mind that all the table values are to 2 decimal places. Thanks. Homework Equations Normal Distribution Tables The Attempt at a Solution...
22. ### Probability function

Homework Statement Hi I am trying to solve the d, e and f parts of this problem The discrete random variable X has probability function where k is a positive constant. P(X = x) ={k(2 – x), x = 0, 1, 2, k(x – 2), x = 3, 0, otherwise, (a) Show that k = 0.25...
23. ### Kinematics and projection

Thanks. But very strong critique though!o:) Please make your tone softer next time. I work full time and study independently. So, its all in my head and my reasoning. Me, myself and I. But I appreciate it. As you can guess, I am typing from work now. Will give you a feedback after work.
24. ### Kinematics and projection

Homework Statement Hi I have been stumped by this question for the past few days. Worrying since I will be sitting STEP in June! Never mind. It goes like this: A particle is projected vertically upwards with a speed of 30m/s from a point A. The point B is h metres above A. The particle moves...
25. ### Projected particle

Homework Statement Hi I have been stumped by this question for the past few days. Worrying since I will be sitting STEP in June! Never mind. It goes like this: A particle is projected vertically upwards with a speed of 30m/s from a point A. The point B is h metres above A. The particle...
26. ### Sketching x/x+2

Cool! Thanks.
27. ### Sketching x/x+2

One of those days???:tongue2:
28. ### Uncertaininty in a reading

Thanks a lot. I have done the part you suggested as my (a) solution. Its (b) that I will like further assistance.
29. ### Uncertaininty in a reading

Yes.Its correct (Advanced level Practical work for Physics, Chapter 1, p7- M Crundell & C Mee)
30. ### Sketching x/x+2

Hmm! This is freshly baked bread on a Sunday morning! Nice and thanks a million.