2. A long solenoid carrying a time-dependent current I(t) is wound on a hollow cylinder whose axis of symmetry is the z-axis. The solenoid's radius is a, and it has n turns per metre. (a) * Write down the magnetic intensity H(ที่ t) and magnetic field B(r,t) everywhere. What is the energy density in the magnetic field inside the solenoid?...
2. At an instant when a 4.0-kg object has an acceleration equal to (5i + 3j) m/s^2 one of the two forces acting on the object is known to be (12i + 22j) N. Determine the magnitude of the other force acting on the object. a. 2.0 N b. 13N c. 18N d. 1.7N e. 20N
Problem 9. PREVIEW ONLY -- ANSWERS NOT RECORDED (1 point) Match each linear system with one of the phase plane direction fields. (The blue lines are the arrow shafts, and the black dots are the arrow tips.) ? 1.7 -14 1 3 2 5 y 1 2. y 1. 1 3 А 111/ ? 3. U 1 3 2 2...
Two particles, each of positive charge q, are fixed in place on the y-axis, one at y=d and the other at y= -d. Write an expression that gives the magnitude E of the net electric field at a point x on the x-axis. Graph E versus x for the range 0 < x < 4d. (Use excel or other graphing...
Question 1 1 pts 2uc 1 mm 1 mm 1 mm 2uc 2C a) What is the electric potential energy of the three point charges in the diagram? (Express your answer in Joules [J] rounded to the nearest integer.) 2uc 1 mm 1 mm 1 mm 2uc 24C b) Now assume that one of the charges in the diagram is...
Three charges are placed on the corners of an equilateral triangle (10μC at the top, -10μC at the lower right, and 5μC at the lower left). Find the magnitude and the direction of the electric field at the center (Point P) of the triangle. The length of one of the sides is 0.5 m. (a) 28.8 x 106 N/C, θ...
Rod OA rotates counterclockwise at a constant angular rate θ = 4 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other collar slides over the circular rod described by the equation r = (1.6 cos θ) m. If both collars have mass of 0.5 kg, determine the force which...
Rod OA rotates counterclockwise with a constant angular velocity of θ = 5 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other slides over the horizontal curved rod, of which the shape is described by the equation r = 1.5(2-cosθ)ft. (Figure 1) Part AIf both collars weigh 0.80 lb, determine...
1) Using the ergodic hypothesis, estimate the equilibrium constant for the channel opening reaction.2) If you had a pair of these channels, what is the probability that one is open and one is closed, at any instant in time.3) Basing your analysis on the Boltzmann distribution, work out the apparent energy difference between the open and the closed state of the...
please explain what equation you use to solve this problem
1. A 2.0 m long rod is hinged at one end and connected to a wall (at the hinged end). It is held at an angle of 30° from the horizontal axis by a cable attached to the rod and to the wall, as shown in Fig. 1. Suddenly, the...