A 1.40 gram rubber-band starts as 90 mm long; 5.1 N stretches it to 150 mm long, but most kids use 18N to pull them to 300 mm long. The rubber-band used this way can launch a 43 gram chalk-board eraser so it travels 3.15 m (x) while it falls 0.92 m (y). Calculate the rubber-band's elastic PE before launching the eraser.

A 1.40 gram rubber-band starts as 90 mm long; 5.1 N stretches it to 150 mm long, but most kids use 18N to pull them to 300 mm long. The rubber-band used this way can launch a 43 gram chalk-board eraser so it travels 3.15 m (x) while it falls 0.92 m (y). Calculate the rubber-band's elastic PE before launching the eraser.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...

See similar textbooks

Similar questions

Two functions are shown below. f(x) = 2x g(x) = x2 + 3x-3 For what positive integer values of x is f(x) > g(x)? A. X 2 B. X 1 O C. x 6 O D. X 5 O D MP3
A. 0.6873 B. 1.4485 C. 1.4550 D. 1.4559 E. Cannot be determined using the given information
Determine the magnitude of A+B. A = 2i – j+ 4k B= 4i + 2j– k A. V43 B. V46 C.-V46 D. V22
Assignment Q1: Write c ++ program to print the square of any integer number entered from the keyboard, and stop executing the program when entering the number zero (o). Q2: Write c ++ program to compute the following series: sum=1+2+3+4+5+... ..99 Q3: Write c++ program to compute the following series: sum=2+4+6+8+10+. . .............100 Q4:Write c ++ program to read 8 scores and compute their average (using while statement) Q5:Write C++ program to calculate the factorial of any number that is entered from the keyboard
A SYSTEM OF TWO ELECTRIC CHARGES a (in N) O 91 What is the magnitude of the electric force on either charge? 91 0.3 mC; 92 = 0.7 mC; mC = 0.001 C; a = 0.6 m; b = 0.2 m. OA: OB: 1.840×103 2.153×103 92 OC: OD: 2.519×103 2.947×103 OE: 3.448×103 OF: 4.034x103 OG: 4.720×103 OH: 5.522x103
If you have the tables below: VI V2 1 10.00 5 1 VI Numeric 2 2 5.00 4 2 12 String 3 3.00 6 3 V3 Numeric S 0 We've calculated the mean of three variables (V1, V2, and V3) using the compute command: O 7.33 4.67 4.00 5.67 3.33 2.00 O 6.00 5.00 5.00 O No Result 5 V3 Type Width Decimals
What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c) C=AB , (d) C=AB , (e) C+2A=B , (f) C=AB , (g) AB=AB , (h) C=2AB , (i) C=A/B , and (j) C=A/B .
A.)7.06N,B.)8.14N Please show your complete solution and write your answer clearly. Thank you.
The graph shows the speed of a car as a function of time. 14 16 15 14 13 12 v (m/s) 11 10 9 8 7 6 5 4 3 2 1 0 0 1 2 34 5 t(s) Initially the car is at rest. What is the acceleration of the car? Please, note that the graph goes through at least one grid intersection point. 210 6 7 8 9 Submit Answer Tries 0/12 How much distance does the car cover between t₁ = 2.33 s and t₂ = 5.07 s? 10
For the vernier caliper with zero reading as zero, determine the reading shown. Choose the best answer. 5 10 15 20 25 .001 in. 7 8 2 3 4 5 6 7 8 9 2 50 20 30 40 60 70 1 2 3 4 5 6 7 8 9 10 0.02 mm 0.843 inch 0.818 inch 0.793 inch 0.798 inch
3. Given: Q1 = 50µC at (2,0, – 3)m Q2 = -50µC at (-2,1,3)m Q3 = 30µC at (1,-7,-3)m Q4 = -10µC at (2,0,3)m %3D Find the force on Q4.
Two trees are 600 m apart. You are standing exactly halfway between them and your lab partner is at the base of tree 1. Lightning strikes both trees.a. Your lab partner, based on measurements he makes, determines that the two lightning strikes were simultaneous. What did you see? Did you see the lightning hit tree 1 first, hit tree 2 first, or hit them both at the same instant of time? Explain.b. Lightning strikes the trees again. This time your lab partner sees both flashes of light at the same instant of time. What did you see? Did you see the lightning hit tree 1 first, hit tree 2 first, or hit them both at the same instant of time? Explain.c. In the scenario of part b, were the lightning strikes simultaneous?Explain.