Workmen are trying to free an suv stuck in the mud. to extricate the vehicle, they use three horizontal ropes, producing the force vectors shown in the figure.(figure 1) take f1 = 914n ,f2 = 704n , and f3 = 399n . part a find the x components of each of the three pulls. enter your answer as three numbers, separated with commas. f1x, f2x, f3x = n submitmy answersgive up try again part b find the y components of each of the three pulls. enter your answer as three numbers, separated with commas. f1y, f2y, f3y = n submitmy answersgive up try again part c use the components to find the magnitude of the resultant of the three pulls. f? = n submitmy answersgive up try again part d use the components to find the direction of the resultant of the three pulls. enter your answer as the angle counted from +x axis in the counterclockwise direction.

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?