Recent content by XwakeriderX

Homework Statement Two 3.5 g masses are attached by a spring has a vibrational frequency of 7.00 s-1. Calculate (a) the force constant of the spring; (b) the zero point energy; (c) the potential energy if the maximum displacement is 0.5 cm.Homework Equations k=((2πcω)^2)μ E=(1/2)hcw (NOTE...

Sorry wrong spot to post! can't figure out how to delete

I was given an amplitude of a wave and was asked "What is the amplitude of each of the two counter-propagating waves that give rise to this standing wave" So since it says "counter-propagating" that means the waves are stacked on each other? so its really just half the given amplitude. Basically...

Hi, I am a college student in a second semester calculus based physics. On Wednesday we have our next test and I am still struggling on the material. This test will be covering Current and Resistance Direct-Current Circuits Magnetic Fields Sources of the Magnetic Field Faraday's Law...

Homework Statement A wheel is comprised of two 50.0 cm long thin rods of negligible mass and a thin metal ring with a mass of 10.00 kg, mounted on a very low friction bearing. A 100 gram lead weight is shot horizontally at the stationary wheel with an initial speed of 50.0 m/s and sticks to...

Okay ill try that thanks!

Homework Statement (see attachment) The work the did gives the correct answer but i do not understand where a lot of that stuff came from! My first question about the work is how they derived 1/2[(m_1)((v_i)_1)^2] =m_1gh Homework Equations Below is the solution The Attempt at a...

Ah okay i got it! i used impulse then apllied W=Pf^2/2M

Ahh i see now thanks!

Homework Statement A meter stick has constant thickness and width , but the material that the stick is constructed from is very strange ... it has a variable mass density that is given by, ρ(x) = 0.800(1 + 0.00250x) grams/cm3 where x is measured in cm. Find the center of mass of the meter...

Hmm i found that W=FD and Fk=μkmg therefore W=μkmgD Now i used W=(1/2)mv^2 then set them equal to each other then solved for D. It worked for me i hope I am not breaking any rules! I'll also try your way! Thanks!

Homework Statement In the attachment problem i was able to find the final velocity, from there someone helped me and got a formula that really confuses me. μ(m + M)g *x = 1/2(m + M) v^2 Homework Equations All the work is write and the answer i just don't understand how they got...

Homework Statement A time-varying horizontal force is given by, F(t) = (1.00 t + 0.250 t^2) Newtons The force is applied from 0 to 5.00 seconds on a 10.0 kg mass which is initially at rest but is allowed to slide freely with only this one horizontal force acting on it. How much work is...

The kinetic energy of a car moving down a road is 1.00 x 10^5 J. The car suddenly doubles the magnitude of it's linear momentum vector without changing it's mass. What is the new value of the car's energy? A) 9.00 x 10^5 J B) 4.00 x 10^5 J C) 6.00 x 10^5 J D) 9.00 x 10^6 J E) none of the...

If a rocket doubles it's relative exhaust velocity while do tripling the "burn rate" of fuel, the thrust... A) doubles B) Triples C) increases 5 times D) increases 6 times E) none of the above! Thrust=dv/dt=lVe(dM/dt)l I just plugged in 2 for V and 3 for dM and 1 for dt giving me 6