Please help me the following questions.

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Part A A cellist tunes the C-string of her instrument to a fundamental frequency of 65.4 Hz. The vibrating portion of the string is 0.565 m long and has a mass of 14.7 g. With what tension must she stretch it? Express your answer in newtons. AEd F O = ? T = N Submit Request Answer Part B What percent increase in tension is needed to increase the frequency from 65.4 Hz to 73.4 Hz, corresponding to a rise in pitch from C to D? Express your answer in percents. IVO AED Submit Request AnswerPart A You pull a simple pendulum of length 0.215 m to the side through an angle of 3.50" and release it. How much time does it take the pendulum bob to reach its highest speed? For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of A simple pendulum. Express your answer with the appropriate units. HA ? t = 10.25 S Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining V Part B How much time does it take if the pendulum is released at an angle of 1.75 instead of 3.50 ? Express your answer with the appropriate units. HA t= Value Units Submit Request AnswerV Correct v = |Up| = |-WA sin(wt + $)| = 0.303 m/s. A 3.00 kg mass on a spring has displacement as a function of time given by the equation x (t) = (7.40 cm) cos [(4.16 rad/s) t - 2.42 rad]. Part G For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Angular frequency, frequency, and period in shm. Find the magnitude of acceleration of the mass at t = 1.00 s; Express your answer with the appropriate units. a = 0.216 Submit Previous Answers Correct a = ar| = [-kx/m| = |-wax| =0.216 m/s2. V Part H Find the magnitude of force on the mass at t = 1.00 s; Express your answer with the appropriate units. ? F = 0.35 N Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remainingPart D Transverse waves on a string have wave speed v = 8.00 m/s, amplitude A = 0.0700 m, and wavelength > = 0.320 m. The waves travel in the Write a wave function describing the wave. -x direction, and at t = 0 the x = 0 end of the string has its maximum upward displacement. Express your answer in terms of c and t. Use 7 as constant. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Wave on a clothesline. IVO AEd 0 : ? y(x, t) = 0.360 m Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part E Find the transverse displacement of a particle at c = 0.360 m at time t = 0. 150 s. Express your answer in meters. y = 4.95x10-2 m Submit Previous Answers Correct From part (d), y = (0.0700 m) cos [27(x/0.320 m +t/0.0400 s)]. Plug in a = 0.360 m and t = 0.150 s: y = (0.0700 m) cos 27(0.360 m/0.320 m + 0.150 s/0.0400 s)] y = (0.0700 m) cos [27(4.875 rad)] = +0.0495 m = +4.95 cm