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(14%) Problem 2: The "lead" in pencils is a graphite composition with a Young's modulus of...
(5%) Problem 6: The "lead" in pencils is a graphite composition with a Young's modulus of about 1.10 N/m. AL Calculate how much shorter (in mm) the length of the lead becomes in an automatic pencil if you tap it straight into the pencil with a force of 3.2 N. The lead is 0.57 mm in diameter and 63 mm long. Grade Summary Deductions Potential 100 tan() ( 7 8 9 Submissions Attempts remaining: 10 cotano asino acos E M...
(13%) Problem 6: Consider an appliance that consumes 4.75 kW.h of energy per day. > A 50% Part (a) What is the average power consumption, in watts, of the appliance? P= o E sin() cos tan() cotan() asin() acos() atan() acotan() sinh) cosh() | tanh() cotanh() Degrees Radians ( 7 8 ^^^V 4 5 * 1 2 + - 0 VO BACKSPACE 9 6 3 . DEL Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining:...
(11%) Problem 8: Suppose you want an oboe to produce a fundamental frequency of 116 Hz (which is below the range of a typical oboe) on a day when the temperature is 14.5°C. DA If you treat the oboe as a perfect air column which is open at both ends, how long, in meters, should the oboe be? L=1 Grade Summary Deductions 0% Potential 100% ( E sin cos t an() cotan asin() acos() atan) acotan sinh) cosh() tanh( cotanh()...
(25%) Problem 1: A wire carrying 415 A to the motor of a commuter train feels an attractive force of 4.1 x 10-3 N/m due to a parallel wire carrying 5.2 A to a headlight. Randomized Variables 1 = 415 A 12 = 5.2 A F= 4.1 x 10-3 N/m 8 How far apart are the wires in meters? r = 1.7 * 10-51 Grade Deducti Potentia PETITIE sin() cos tan() cotan asin() acos | atan() | acotan) | sinh)...
(906) Problem 8: Light of wavelength -536 nm passes through a single slit of width w =2.1 um and illuminates a screen L= 1.7 m away. t material, 50% Part (a) What is the maximum number of dark fringes neinges of light could this setup produce on the sereen? Grade Summar fringes 8 Deductions Potential sin() cos) tan) 7 HOME Submissions asin) acos) cotan) E 1 4 5 6 Attempts remains (4%% per attempt) detailed view atan) sinh) d acotan)...
(5%) Problem 8: Consider a 470 nm wavelength blue light falling on a pair of slits separated by 0.035 mm. A At what angle (in degrees) is the first-order maximum for the blue light? Grade Summary Deductions 0% Potential 100% sino TT ( 9 HOME 7 8 45 E 6 cotan atan cosh cos tano asino acos acotan tanh cotanh Degrees O Radians Submissions Attempts remaining: 3 (0% per attempt) letailed view sinho 12 برا + - 0 END NO...
(14%) Problem 7: Suppose a tightrope walker creates a tension of 3.94 x 103 N making an angle of 5° below the horizontal from each supporting pole Calculate how much this tension stretches the steel wire if it was originally 16 m long and 0.43 cm in diameter. Assume steel has a Young's modulus of 2.10 x 101 N/m2. Give your answer in cm. Grade Summary AL = 0.31 Deductions 3% Potential 97% sin( cotan cos Submissions tan 7 НОМE...
(13%) Problem 7: Consider a parallel plate capacitor having plates of area 1 .25 cmŕ that are separated by 0.016 mm of neoprene rubber. You may assume the rubber has a dielectric constant x- 6.7. > 50% Part (a) What is the capacitance in μF? Grade Summary Deductions Potential 0% 100% cotan atan cosh acos sinh( tanh) cotanhh 4 5 6 1 2 3 0 Submissions Attempts remaining: 6 (3% per attempt) detailed view asin acotan o Degrees oRadians DELCLEA...
You are told that a basketball player spins the ball on his finger with an angular acceleration of 110 rad/s2. (10%) Problem 9: Incorrect Answer The provided answer is not correct and no specific feedback is available. Please view available hints and review the relevant material. Close What is the ball's final angular speed, in radians per second, if the ball starts from rest and the acceleration lasts 2.5 s? Grade Summary 35 5% Deductions Potential 95% Submissions Attempts remaining:...
(25%) Problem 2: Consider a person whose body temperature has risen because of a fever. A What is the temperature, in degrees Fahrenheit, of a person with a 39.2°C fever? T[°F] = 1 o ( 7 8 9 HOME E ^^ 4 5 6 sin() cos() tan() cotan() asin() acos() atan) acotan() sinh cosh() tanh) | cotanh() Degrees Radians * 1 2 3 .. → END 0 BACKSPACE DEL CLEAR Submit Hint Feedback I give up!