Problem 4: A wire of length L = 0.35 m and mass m = 0.045 kg carries a current of I- 0.25 A. The wire is floating at rest in a magnetic field as shown in the figure Randomized Variables L= 0.35 m m = 0.045 kg I-0.25 A Otheexpertta.com Part (a) What are the forces acting on the wire, and which directions do they go? Gravity, downward. Magnetic force, upward. Correct! D Part (b) Express the magnitude of the magnetic force in terms of the current I, length L and the magnetic field 4 5 6 BACKSPACE LEAR Submit Hint I give up! Hints: 1 %-deduction per hint. Hints remaining: 1 Feedback: 1%deduction per feedback. Part (c) Given the fact that the wire is floating at rest, derive an expression for B Part (d) Calculate the numerical value of B in tesla.

In the figure below, the blue wire has a current I = 34 A and the red loop is a square with sides that are 45 cm long. The distance between the blue wire and wire AB is 2.6 cm. Determine the force the blue wire exerts on wire AB and the force the blue wire exerts wire CD. I- A Force of blue wire on AB = direction of force on AB %3D - 67 V 4.7 Q Force of blue wire on CD = direction of force on CD = Choose direction v D' <.

Consider a long, horizontal Large Wire with current of 10 A running through it. We want to levitate a horizontal, thin, 0.50 m length of wire above it. If the thin wire has a mass of 10 grams, and a current of 300 mA, how far above the Large Wire will it hover (net force of zero) due to magnetic and gravitational forces? A. If the thin wire hovers above the Large Wire due to their magnetic fields, are their currents going the same direction, or opposite directions. Explain. B. Draw a diagram and label the directions of currents, and all other relevant quantities and vectors. C. Find the distance above the Large Wire the small thin wire will hover (net force of zero). D. Would your answers to parts A and C change if we wanted to find a distance below (rather than above) the Large Wire that the smaller thin wire could hover, due to their magnetic fields. Explain. Don't calculate any values but draw a new diagram and explain how this situation compares to the problem above.

9. A helium nucleus (2 protons, 2 neutrons) is traveling at a velocity of 4.33 x 10^6 m/s a distance of 4.52 cm away from a wire carrying a current of 1.40 A. The helium nucleus is traveling in a direction parallel to the current in the wire. How much acceleration does the helium nucleus experience due to the magnetic force from the current in the wire?     1.54E+09 m/s^2   2.05E+09 m/s^2   1.28E+09 m/s^2   5.12E+08 m/s^2

If a magnetic field exerts a 0.042 N force on a 0.22 m length of wire that is carrying 0.72 A then what is the magnitude of the magnetic field if the field is perpendicular to the current?

please help

In the figure below, the blue wire has a current I = 34 A and the red loop is a square with sides that are 45 cm long. The distance between the blue wire and wire AB is 2.6 cm. Determine the force the blue wire exerts on wire AB and the force the blue wire exerts wire CD. I A B Force of blue wire on AB direction of force on AB : 67 V 4.7 Q Force of blue wire on CD = direction of force on CD Choose direction

An electric field of 1.25 kV/m and a magnetic field of 0.529 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed? Number i Units

1. Find the force on the moving positive charge. oUp olnto Page ORight ONot Possible oDown oleft DOut of Page B 2. A wire in a magnetic field has current flowing in it as shown. Which direction does the wire move I due to B? oUp olnto Page ORight ONot Possible oDown oleft DOut of Page B 3. A proton is at rest in a magnetic field. Which way will the proton move? oUp oDown oLeft ONot Possible ORight olnto Page DOut of Page 4. A moving proton enters a magnetic field. Which way will the proton turn? oUp olnto Page ORight ONot Possible oDown oleft OOut of Page X X X X X X X X X