Which of the following is part of a vacuum

1. Predict the frequency of a tuning fork that emits a sound with a wavelength of 0.385 m. 2. A fork displays a reading of 384 Hz. Calculate the wavelength of the sound as it travels through. How would I solve these questions?

What is a voltage source

Two objects, Object A and Object B, need to be identified. Object A's index of refraction is determined to be 1.77, and Object B's index of refraction is determined to be 1.333. Knowing this information, which of the following must be true? A.

Which of the following best describes what we mean by the universe? (A) all the galaxies in all the superclusters (B) the sum total of all matter and energy (C) a vast collection of stars that number as many as the grains of sand on all the beaches

Tobacco use can negatively impact a person's health, family, and finances. a. True b. False

A 6 kg table has a net force of 15 N acting on it. What is the magnitude of the acceleration of the table?

What would a drummer do to make the sound of the drum give a note of lower pitch?

Um atleta correu 400 metros em 80 segundos. Qual é sua velocidade média?

An object at free fall near the Earth's surface experiences constant velocity. True or false?

Ian walks 2km to his best friends house, the. Walks. 5km to the library. Then makes a 2.5 km walk home. The entire walk took 3 hours. What is his average speed in km/h?