I have no idea about these questions.

6. [-/2 Points] DETAILS SERPSE10 17.A.OP.044. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A flute may be thought of as a pipe open at both ends. When all the holes of a well-designed flute are covered and the temperature is 20.0C, it will produce sound with a frequency of 261.6 Hz (middle C). The speed of sound in air at 20.0 C is 343 m/s. (a) Find the length of the flute (in m), assuming middle C is the fundamental. m (b) When an identical flute is played at the same time and in the same manner (all holes covered) in a nearby cold room, a beat frequency of 1.53 Hz is heard. Determine the temperature in the cold room (in .C). .CSERPSE1D 13.6.0P.026. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A communications satellite is launched into circular orbit around the Earth, at an altitude h. The satellite's mass is m, and it was launched from Earth's surface. (Use the following as necessary: RE for the radius of the Earth, ME for the mass of the Earth, 6 for the gravitational constant, In, and h.) 8. [-l3 Points] (a) How long does the satellite take to complete one circular orbit? T: (b) What is the satellite's speed? Vsateillte : (c) What is the minimum energy input necessary to place this satellite in orbit? Ignore air resistance but include the effect of the planet's daily rotation. (Use the following as necessary: RE, ME, G, 111, h, and TE for the period of Earth's rotation.) AEmin