Acombined circuit has two resistors in series (27.5 ohms and 33.0 ohms) and another in parallel (22.0 ohms). if the power source is 9.0 volts, what will the current be?

a. 0.062 amps
b. 16 amps
c. 0.56 amps
d. 0.32 amps
e. 39 amps

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

Ice at 0.0∘c has a density of 917 kg/m3. a 3.00 cm3 ice cube is gently released inside a small container filled with oil and is observed to be neutrally buoyant. what is the density of the oil?