Apulse is a non-recurrent wave.
true
false

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.

Estimate of the number of stars in our galaxy

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero