If r1 =1 ω, r2 =2 ω, r3 = 6 ω, r4= 6 ω, r5= 0.5 ω, r6= 2 ω, r7= 4 ω, r8=6 ω, r9=4 ω, r10=6 ω, r11=3 ω, r12=4 ω, r13=6 ω, r14=6 ω, r15=6 ω, r16=6 ω, and r17=3 ω, and v=15v, calculate the currents and voltages through it each resistor.

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.