Q8. What angle is used to find the magnetic force at points a and b ? What is the direction of the magnetic force on an electron at a and b? The red arrows are velocity. Q10. What are the signs of the charges of each particle? Q12. Each wire carries 10 A of current. What is the magnitude and direction of the magnetic field at point P? Q3. What is the direction of the magnetic field at point P in the figure? (P is on the axis of the coil) Q4. What is the direction of the magnetic force on a PROTON at each point indicated? Q5. What is the direction of the magnetic force on an ELECTRON at each point indicated?
The figure below shows two very long straight wires (in cross section) that each carry a current of 3.90 A directly out of the page. Distance d1 = 8.00 mand distance d2 = 6.00 m. What is the magnitude of the net magnetic field at point P, which lies on a perpendicular bisector to the wires? Number Units
A car's bumper is designed to withstand a 4.68 km/h (1.3 m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in N ) on a bumper that collapses 0.195 m while bringing a 830 kg car to rest from an initial speed of 1.3 m/s. (Enter a number.)
Determine the magnetic field at a point P located a distance (x = 63.7 cm) from the corner of an infinitely long wire bent at a right angle as shown in the Figure. The wire carries a steady current (I = 11.7) (unit in μT. 1 μT = 10−6 T).
A transverse wave propagates along a string of linear mass density 0.077 kg/m in the positive-x direction. The displacement of the string at t = 0 s and x = 0 cm is shown in the figures below (note the units on the axes!). Determine the following quantities. A. (6 points) From simply looking at the graphs, what is the period (T), wavelength (λ), and amplitude (ym) of the wave?
A thin plastic rod, of length 4 m , lies along the x-axis (only a portion of the rod is shown in the diagram). It has a charge of -255 nC) uniformly distributed over its surface. A thin disk, of radius 7.0 cm, is centered at ⟨5, 12, 0⟩ cm. It has a uniform charge of +17 nC . Calculate the force on a small ball with charge -8 nC placed at ⟨0, 12, 0⟩ cm. Your answer must be a vector. Clearly show all steps in your work. F→ = ⟨ ⟩ N
A physical pendulum on Earth consists of a uniform rod oscillating about its endpoint. The mass of the rod is m = 0.400 kg. Assume oscillations are small. The period is T = 1.30 s. Hint: The moment of inertia about the endpoint is I = mL2/3 a) Calculate the length of the rod. b) What length would a simple pendulum (mass on string) need so that its period matched that of the physical pendulum. Assume the mass is the same.