Recent content by SalsaOnMyTaco

I've solve it Q=q1+q2 if q1=12,000 30,000-12,000=q2 q2=18,000 so C=q2/v C=450uF

Homework Statement When the switch is closed, Potential drops to 40v across C1 & C2(Parallel series). Find the Capacitance of C2 Homework Equations Before switch is closed C1=300uF and holds a charge of Q1=3e4 uC V=100vAfter switch is closed V'=40vThe Attempt at a Solution V1=V2 So...

Which means the Object´s image will appear to the right (or behind) of the concave lense. 80-100= -20 U=-20 solve for V

Homework Statement Recalling that the field due to an infinite line charge with Charge-per-unit-lenght λ is E=λ/2∏εx At distant x from the line, find the field due to an infinite "Ribbon" of charge 2cm wide, at point 2 cm from one edge in the plane of the Ribbon. The surface charge...

Actually I think I figured out B. Iz=Ix+Iy By symmetry Ix=Iy So 2Ix=Iz Iz=Md^2/4 Ix=1/2Iz Iz=md^2/8 Is this correct?

Homework Statement A flat object shown here consists of a circle and square made of heavy, uniform wire and welded together at the corners of the square. The mass of the circle is M. The mass of the square is m and its side has a length d. To find the objects moment of inertia about Axis A...

Yes, when mass increases, acceleration decreases/Mass decreases, acceleration increases.

Homework Statement A certain Force applied to a particle of m1 gives it an acceleration of 20m/s2. The same Force applied to a particle of m2 gives it an acceleration of 30m/s2. If the two particles are glued together and the same force is applied to the combination, find the...

instantaneous acceleration?

speed remains the same, it does not increase or decrease

Homework Statement On Land, a 5000kg amphibious vehicle can accelerate from rest to 10 m/s in 25 sec. Find... a)Final Kinetic Energy? -250,000 b)Avg Power furnished by engine during acceleration? -10,000 c)If the same power is required to propel the vehicle through water at a...

I don't quite understand this step, could you please type a more detailed explanation?

Homework Statement The position of the center of the box shown is given by the equation x = 4.4 m * cos(29/sec * t) -How long does it take the box to move from -2.2 m to +2.2 m? Homework Equations x = 4.4 m * cos(29/sec * t) The Attempt at a Solution ±.5=cos29t [arccos(-.5) -...