Chapter 4: 2CP (page 136)
Approximately what is the radius of a copper atom? Is it , , , , or ?
Short Answer
The approximate radius of a copper atom is.
Chapter 4: 2CP (page 136)
Approximately what is the radius of a copper atom? Is it , , , , or ?
The approximate radius of a copper atom is.
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Get started for freeAn object of mass is attached by two stretched springs (stiffness and relaxed length ) to rigid walls, as shown in figure 4.60. The springs are initially stretched by an amount . When the object is displaced to the right and released, it oscillates horizontally. Starting from the momentum principle, find a function of the displacement of the object and the time describes the oscillatory motion.
(a) What is the period of the motion?
(b) If were shorter (so the springs are initially stretched more), would the period be larger, smaller, or the same?
: Two wires with equal lengths are made of pure copper. The diameter of wire A is twice the diameter of wire B. When 6kg masses are hung on the wires, wire B stretches more than wire A. You make careful measurements and compute young’s modulus for both wires. What do you find? (a) , b) c)
A box with initial speed slides across the floor and comes to a stop after (a) what is the coefficient of kinetic friction? (b) How far does the box move? (c) You put a block in the box, so the total mass is now , and you launch this heavier box with an initial speed of . How long does it take to stop?
Question:A certain metal with atomic mass 2 × 10−25 kg has an interatomic bond with length 2.1 × 10−10 m and stiffness 40 N/m. What is the speed of sound in a rod made of this metal?
A 3 kgblock measures5 cm by 10 cm by 20cm. When it slides on a 10cm by 20 cmface, it moves with constant speed when pulled horizontally by a force whose magnitude 3N is. How big a horizontal force must be applied to pull it with constant speed of it slides on a 5 cm by 20 cm face?
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