homework assignment im quoted $35 on another website assigncode. short questions
Physics 2 homework please show work 10) 3)A 5.2 A current is set up in a circuit for 4.8 min by a rechargeable battery with a 12 V emf. By how much is the chemical energy of the battery reduced? NumberUnits 11) 4( a) In the figure what value must R have if the current in the circuit is to be 1.0 mA? Take ε1 = 2.3 V, ε2 = 4.8 V, and r1 = r2 = 2.9 Ω. (b) What is the rate at which thermal energy appears in R? (a) Number Units (b) (Number Units 12) 5) When resistors 1 and 2 are connected in series, the equivalent resistance is 17.8 Ω. When they are connected in parallel, the equivalent resistance is 3.17 Ω. What are (a) the smaller resistance and (b) the larger resistance of these two resistors? (a) Number Units (b) (Number Units 13) 6)In the figure the current in resistance 6 is i6 = 1.40 A and the resistances are R1 = R2 = R3 = 2.07 Ω, R4 = 17.7 Ω, R5 = 8.03 Ω, and R6 = 3.55 Ω. What is the emf of the ideal battery? NumberUnits 14) 7)In the figure ε1 = 4.21 V, ε2 = 1.06 V, R1 = 6.87 Ω, R2 = 2.31 Ω, R3 = 3.13 Ω, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R1, (b) R2, and (c) R3? What is the power of (d) battery 1 and (e) battery 2? a)Number Units (b)Number Units (c)Number Units (d)Number Units (e)Number Units 14) 8)In the circuit of the figure ℰ = 3.70 kV, C = 7.60 μF, R1 = R2 = R3 = 0.870 MΩ. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i1 in resistor 1, (b) current i2 in resistor 2, and (c) current i3 in resistor 3? At t = ∞ (that is, after many time constants), what are (d)i1, (e)i2, and (f)i3? What is the potential difference V2 across resistor 2 at (g)t = 0 and (h)t = ∞? a)Number Units (b)Number Units (c)Number Units (d)Number Units (e)Number Units (f)Number Units (g)Number Units (h)Number Units 15) 9) In the figure R1 = 9.12 kΩ, R2 = 14.1 kΩ, C = 0.441 μF, and the ideal battery has emf ε = 20.0 V. First, the switch is closed a long time so that the steady state is reached. Then the switch is opened at time t = 0. What is the current in resistor 2 at t = 4.50 ms? NumberUnits 16) 10) In the figure the ideal batteries have emfs ε1 = 20.8 V, ε2 = 10.5 V, and ε3 = 4.50 V, and the resistances are each 2.10 Ω. What are the (a) size and (b) direction (left or right) of current i1? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? a)Number Units (b)Number Units (c)Number Units (d)Number Units (e)Number Units (f)Number Units (g)Number Units (h)Number Units 17) 1) The figure shows crossed uniform electric and magnetic fields and, at a certain instant, the velocity vectors of the 10 charged particles listed in the table. (The vectors are not drawn to scale.) The speeds given in the table are either less than or greater than E/B (see Question 1). Which particles will move out of the page toward you after the instant shown in the figure? (Several choices may be correct.) Particle 1 Particle 2 Particle 3 Particle 4 Particle 5 Particle 6 Particle 7 Particle 8 Particle 9 Particle 10 18) 2) A proton traveling at 30.5° with respect to the direction of a magnetic field of strength 3.19 mT experiences a magnetic force of 5.31 × 10-17 N. Calculate (a) the proton's speed and (b) its kinetic energy in electron-volts. a)Number Units (b)Number Units 18) 3) In the figure, an electron accelerated from rest through potential difference V1= 1.42 kV enters the gap between two parallel plates having separation d= 22.1 mm and potential difference V2= 72.2 V. The lower plate is at the lower potential. Neglect fringing and assume that the electron's velocity vector is perpendicular to the electric field vector between the plates. In unit-vector notation, what uniform magnetic field allows the electron to travel in a straight line in the gap? NumberUnits 19) 4) A proton travels through uniform magnetic and electric fields. The magnetic field is in the negative x direction and has a magnitude of 3.27 mT. At one instant the velocity of the proton is in the positive y direction and has a magnitude of 2240 m/s. At that instant, what is the magnitude of the net force acting on the proton if the electric field is (a) in the positive z direction and has a magnitude of 3.11 V/m, (b) in the negative z direction and has a magnitude of 3.11 V/m, and (c) in the positive x direction and has a magnitude of 3.11 V/m? a)Number Units (b)Number Units (c)Number Units 20) 5) The figure shows a metallic block, with its faces parallel to coordinate axes. The block is in a uniform magnetic field of magnitude 0.025 T. One edge length of the block is 23 cm; the block is not drawn to scale. The block is moved at 2.5 m/s parallel to each axis, in turn, and the resulting potential difference V that appears across the block is measured. With the motion parallel to the y axis, V =16 mV; with the motion parallel to the z axis, V = 12 mV; with the motion parallel to the x axis, V = 0. What are the block lengths (a) dx, (b) dy, and (c) dz? a)Number Units (b)Number Units (c)Number Units 21) 6) In the figure, a particle moves along a circle in a region of uniform magnetic field of magnitude B = 4.3 mT. The particle is either a proton or an electron (you must decide which). It experiences a magnetic force of magnitude 2.8 × 10-15 N. What are (a) the particle's speed, (b) the radius of the circle, and (c) the period of the motion? a)Number Units (b)Number Units (c)Number Units 22) 7) An electron is accelerated from rest through potential difference V and then enters a region of uniform magnetic field, where it undergoes uniform circular motion. The figure gives the radius r of that motion versus V1/2. The vertical axis scale is set by rs= 2.7 mm, and the horizontal axis scale is set by Vs1/2= 29.6 V1/2. What is the magnitude of the magnetic field? NumberUnits In the figure, an electron with an initial kinetic energy of 4.40 keV enters region 1 at time t = 0. That region contains a uniform magnetic field directed into the page, with magnitude 0.00990 T. The electron goes through a half-circle and then exits region 1, headed toward region 2 across a gap of 27.0 cm. There is an electric potential difference ΔV = 2100 V across the gap, with a polarity such that the electron's speed increases uniformly as it traverses the gap. Region 2 contains a uniform magnetic field directed out of the page, with magnitude 0.0222 T. The electron goes through a half-circle and then leaves region 2. At what time t does it leave? NumberUnits Ch28 9) In a certain cyclotron a proton moves in a circle of radius 0.510 m. The magnitude of the magnetic field is 1.20 T. (a) What is the oscillator frequency? (b) What is the kinetic energy of the proton? a)Number Units (b)Number Units 10) An electron moves in a circle of radius r = 4.13 × 10-11 m with a speed 3.43 × 106 m/s. Treat the circular path as a current loop with a constant current equal to the ratio of the electron's charge magnitude to the period of the motion. If the circle lies in a uniform magnetic field of magnitude B = 7.39 mT, what is the maximum possible magnitude of the torque produced on the loop by the field? NumberUnits