8. A marble of radius R = 3.0 cm rolls uniformly (without skidding) on two parallel tracks separated by a distan...
Two parallel circular rings of radius R = 21 cm have their
centers on the x axis separated by a distance l = 10.4 cm. If each
ring carries a uniformly distributed charge Q = 0.015 ?C, find the
electric field E at the point on the x axis at x = 3 cm. Give a
positive answer if the electric field points to the right, negative
if to the left.
Find the electric field E at x = 16.9...
1) A solid ball of mass M and radius R rolls without slipping down a hill with slope tan θ. (That is θ is the angle of the hill relative to the horizontal direction.) What is the static frictional force acting on it? It is possible to solve this question in a fairly simple way using two ingredients: a) As derived in the worksheet when an object of moment of inertia I, mass M and radius R starts at rest...
A capacitor consists of two circular parallel plates of radius r=150 mm, separated by a distance d=20 mm. The initial magnitude of the charge on the capacitor is q=9.0 x 10^-8 C, and after discharge is initiated it discharges via a steady current I=2.5 mA. (a) What is the power that crosses the closed cylindrical surface surrounding the space between the plates 2.0 x 10^-5 seconds after discharge begins? (b) What is this power at t=2.0 μs?
Q4 (15 points): A uniform hoop of radius R - 15 cm and mass M 1.2 kg is placed at the top of an incline of height h-2 m. The surface of the incline makes an angle θ-30° with the horizontal. The hoop is released from rest and rolls without slipping. m MR2 for hoopl a) What is the acceleration of its center of mass (açom) during rolling? b) What is the force of friction in unit vector notation required...
write out answers please
3. (8 pts) Two long, parallel wires are separated by 3.0 cm. Wire A carries a 5 A and Wire B carries a 7 A; the currents flow in opposite directions. a) b) c) d) (2 pts) Find the magnitude and direction of total magnetic field of the wires at a point 3.0 cm from Wire A. (2 pts) Find the magnitude of the net force on Wire B from the magnetic field created by Wire...
**Please base question 3 on the picture above.
2. (10 points) Two parallel plates, separated by 12 mm, are attached to a battery providing a constant voltage of 10 V. A positron (positively charged electron) is moved from the bottom plate to the top along two different paths (A and B) as shown in the figure. What is the difference in work required to move the positron along each path? 10 v +- +1 Path A Path B 3. (10...