Question 14 (5 points) For 20 meters in depth of fresh water, the static pressure there is approximately (1 atm = 101300 Pa; water density= 1000 kg/m3) 1 atm 3 atm 5 atm 4 atm 2 atmQuestion 15 (5 points) A simple harmonic motion of a. point mass m can be expressed by (in m) . 31' x = 551:1(31: +E) What is the frequency of the oscillations (in Hz)? 01/2 01/13 Question 16 (4 points) A simple harmonic motion of a point mass m can be expressed by (in In) . N x = 55m(t +3) What is the initial position the oscillations (in m)? 0 1 Q 2 0 4x1: 0 2P 0 5/2 Question 18 (5 points) 2 A metal rod that is 4 m long and 0.5 cm in crosssectional area is found to stretch 0.2 cm under a tension uf104 N. Find the Young's modulus for this metal (in Pa). (3'- 1.0x10\" 0- 4.0x10\" \"\\ 14 L,- 4.0x10 @- 2.0x1013 '\\ 11 (3 2.0x10 Question 21 (5 points) A friend of yours is loudly singing a single note at 500 Hz while racing toward you at 27.2 m/s on a day when the speed of sound is 343 m/s. What frequency do you hear? 540 463 543 460 500Question 22 (5 points) A friend of yours is racing toward you at 27.2 m/s. If you suddenly start singing at 500 Hz on a day when the speed of sound is 343 m/s. What frequency does your friend hear? 460 540 543 463 O 500Question 23 (4 points} Find the speed of a low earth orbital satellite with mass m (its altitude above the Earth's surface is negligible in comparison with the Earth's radius R) in terms of the given parameters (3 is gravitational acceleration around the Earth's surface). 0 VgR/2 Question 24 (4 points} Find the period of a low earth orbital satellite with mass m (its altitude above the Earth's surface is negligible in comparison with the Earth's radius R) in terms of the given parameters (3 is gravitational acceleration around the Earth's surface). 02' /R/g