1. Which of the following best describes a nebula? a. a group of over 100 billion stars in which we live
b. the distance light travels in a year
c. a big star that explodes
d. denser clouds of particles found in the interstellar medium​

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

How can you increase the strength of an electromagnet?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell