Sonar question: A person's yells into a deep well, sending a sound wave that travels at a speed of 50 m/s. The echo is heard in 6 seconds.

How deep is the well? Remember, speed distance/time

How does the matter and energy in a system naturally change over time?

Which statement best describes chemical properties of matter?

Which best describes the difference between internal and thermal energy? Internal energy is the total potential energy in a substance, and thermal energy is the total kinetic energy in a substance.

Which statements are correct about the groups of the periodic table?

What is sin (77°) ? A. 4.33 B. 0.97 C. 0.22 D. 0.77

Using diagram differentiate between solenoid and a toroid

The product of voltage across a device and the charge passing through it is: field strength work force inductance

Como se relaciona aceleracao centripeta com o raio? como seria em grafico?

Explain the amount of chromosomes and gene combinations in a parent cell and offspring that result from meiosis and fertilization

Does the speed of a sound wave ever change in a gas? What is the speed of a sound wave?