Find the currents flowing in the circuit in the figure below. (Assume the resistances are R1 = 6 Ω, R2 = 20 Ω, R3 = 12 Ω, R4 = 8 Ω, r1 = 0.5 Ω, r2 = 0.75 Ω, r3 = 0.25 Ω, and r4 = 0.75 Ω.)

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?