You hear a Concert A tone from the speaker. Describe the motion of the speaker and how this motion leads to our ears detecting Concert A tone, that is include the chain of cause-and-effect logic that results in your hearing Concert A tone from the speaker.

Based on the graph, how would you describe the net forces acting on the moving object? a) net force equals zero. b) net force is greater to the right. c) there is no way to determine net force. d) net force is positive and to the right.

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring