Recent content by Josh930

Homework Statement An ideal voltmeter is connected to a 2.0 Omega resistor and a battery with emf 5.0V and internal resistance 0.5 Omega Series Circuit Homework Equations V=IR V=I(R1+R2) R(total)=R1+R2The Attempt at a Solution 5.0V=I(.5 Ohms + 2.0 Ohms) solve for I because...

Homework Statement if a ball hit by a racket at an angle of 3 degrees reaches a height of .330m at its trajectory, how fast was the ball moving when it left the racket? Homework Equations d=volt + 1/2at^2 Vf=Vo+at The Attempt at a Solution Vox = Vocos(3dgres) Voy =...

sry to disappoint... but, no bugs bunny. lol what if i said i just started calculus II about a month ago. I can do integrals by sub, parts, but I am not seeing where they are used.

Homework Statement Integration I am soooo lost. I don't even know if this is the right forum... But where is the bridge between Calculus and Physics? I can Integrate equations, but when it comes to physics, i for one, don't know when to integrate; two, i don't see how you find the constants...

Homework Statement Integration I am soooo lost. I don't even know if this is the right forum... But where is the bridge between Calculus and Physics? I can Integrate equations, but when it comes to physics, i for one, don't know when to integrate; two, i don't see how you find the...

I am soooo lost. I don't even know if this is the right forum. But where is the bridge between Calculus and Physics? I can Integrate equations, but when it comes to physics, i for one, don't know when to integrate; two, i don't see how you find the constants to remove from the integral; and...

Homework Statement Four identical charges are placed at the corners of a square of side side L. Find the magnitude total force exerted on one charge by the other three charges. Express your answer in terms of the variables Q, L and appropriate constants. where did the L root2 in the...

i messed up and wrote 2m. so 15g is 15x the acceleration of gravity

they are 20cm apart? so .2m

F=ma=F=k(q1q2/r^2) q1=q2; let Q^2=q1q2 sqrt(mar^2/k)=Q sqrt((8.55g*15.0m/s)((2m)^2)/k)=Q Q=2.39e-4 Q=ne n=2.39e-4/1.6e-19 =1.49e15 electrons

Homework Statement Two very small 8.55-g spheres, 20.0cm apart from center to center, are charged by adding equal numbers of electrons to each of them. Disregarding all other forces, how many electrons would you have to add to each sphere so that the two spheres will accelerate at 15.0 g...

well i worked out part 1 of the problem and got 24.5m/s which is wrong. When finding the potential energy at the point .410, which lies between the 2 charges, do i use .410 for the distance r in the equation; U=(8.85e9)*(-2.6e-6 * -7.6e-6)/r = 1/2mv^2 ?

so i need to find the electrical potential energy. Then this is equal to the KE= 1/2mv^2; so K(Q1Q2)/r=1/2mv^2 and solve for v at r .410m for the first question then how do i find how close they get to each other. Using the same equations and solving for r where ke=u? if so, how do i...

Homework Statement A small metal sphere, carrying a net charge of q_1 = -2.70 \mu C, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q_2 = -7.60 \mu C and mass 1.50 g, is projected toward q_{1}. When the two spheres are 0.800 \rm m...

Homework Statement Three equal point charges, each with charge 1.35 \mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.350 m. What is the electric potential energy U of the system? (Take as zero the potential energy of the three charges when they are...