The speaker at the concert has the sound intensity level of 100 dB if we listen from the distance 5 m. How far from the speaker does the intensity level drop to the safe value of 85 dB?

Beat frequency problem. Your ear simultaneously hears waves from different sources, so it can hear beats from the two speakers.

Is god real? i wanna know

Describe how to make an electromagnet

One way that a magnet's domain could become unaligned is which of the following? A. by using it too much B. by heating it C. by breaking it D. by putting it near a magnet that repels it

Why do we only see one side of the moon

Wave can be described as A. a continuous transmission of energy from one location to the next B. The disturbance of particles in an area C. The transmission of energy through individual particles D. The motion of particles in a medium

A germ is also called a microorganism or a microbe. True False

What is 1.33Ω plus 2Ω?

As a fire truck approached Mary, the pitch of the siren got higher. once the fire truck passed and moved away, the sirens pitch got lower. this change in pitch is because in the sound waves

Find the magnitude of the sum of these two vectors