Acircuit has 3 resistors, all connected in parallel. let r1 = 4.0 ω, r2 = 3.0 ω, and r3 = 6.0 ω. what is the equivalent resistance of the circuit? show all work and include units of measure.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n