Recent content by jono240

So simple, what am I missing?? Homework Statement A wagon is being pulled with a force of 104N so that the handle makes an angle of 35 degrees above the horizontal. The force of friction between the wheels of the wagon and the ground is 78N. What is the net force acting on the wagon...

There is a crucial aspect of this unit that I am not understanding and that is how to find how many nodal or anti nodal lines are in the equation. relevant formulas: So if I am looking for how many anti nodal lines exist I use the formula | dsinθmax = n*λ | So let's say I have d and λ d...

lol alright. I wasnt sure about the algebra there. thanks a lot man!

I know that rb is 2ra so if I just substitute the 2ra in the first equation, do I get GMm/2ra = -2MJ/2 Im not sure if that's algebraically correct

Homework Statement An object is moved from A to B in the gravitational field of earth. The distance between the center of Earth and B is twice that of A. If the gravitational potential energy of the object at A is -2MJ, what is the gravitational potential energy of the object at B?Homework...

ya n-m does anyone have an answer for this though? I found a question from the textbook that had a wrong answer in the back so I don't care about that answer anymore. I am starting to think my first attempt is the correct way. Can anyone confirm that for me please?

Homework Statement A mass of 2kg rotates at 1m/s in a horizontal circle on a table at the end of a spring with an elastic constant of 50N/m. If the original length of the spring is 2m, find the extension of the spring. Given - M=2kg, V=1m/s, k=50N/m, original length of x=2m find x'...

Homework Statement This should be an easy one. Please tell me what I am missing. A man is pushing a 75 kg crate at constant velocity a distance of 12 m across a warehouse. He is pushing with a force of 225 N at an angle of 15° down from the horizontal. The coefficient of friction...

True.. Thanks for the input man. Il keep your explanation in mind as I try to persuade her to give me the marks :D

Ya Il have to rewrite it better I guess. Shes tough when it comes to explanations. You have to explain it as a physicist would you know. I am looking at my answers and they seem to make perfect sence. For example one of the questions is blowing air into a sail.. would it work or not and explain...

Hi guys. I'd like to make an introduction somewhere but there doesn't seem to be a forum for that here. Basically I am an older student who, despite having low grades all throughout school, always loved science. I decided to go back to adult school to upgrade my marks and then go to university...