In order for an object to accelerate what must be true?

Suppose your family complained that the music you play in your room is too loud. what could you do to reduce the amount of sound they hear?

A bell is rung. What best describes the density of air around the bell? a. The air density does not change. b. The air density increases and then returns to normal levels. c. The air density decreases and then returns to normal levels. d.

Which ballet move is most similar to a track runner jumping over hurdles? Balancing on one leg Complex footwork patterns Straight leg dance kick Split leap

Use Newton's second law to determine how much force is being applied to an object that is travelling at a constant velocity.

Calculate the fundamental frequency of a 4 meter organ pipe that is open at both ends. assume that the temperature is 20◦c and the speed of the sound is 344 m/s. answer in units of hz.

Most telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of 24-gauge wire is 137 Ω/mile and the resistance of 26-gauge wire is 220 Ω/mile, what is the ratio of the diameter of 24-gauge wire to that of 26-gauge wire?

Classify the sentences based on whether they describe temperature or thermal energy.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

Which statement is true? The speed of sound in air is inversely proportional to the temperature of the air. The speed of sound in air is directly proportional to the temperature of the air.

What is the molar mass of an ideal gas if a 0.800 g sample of this gas occupies a volume of 200. mL at 50.0 oC and 720. mm Hg?