Young's Modulus: A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it.(a) What is Young's modulus for the material from this wire is made?(b) What is the effective spring constant for the stretching wire?
What will be an ideal response?
(a) 1.0 × 1011 Pa (b) 2.2 × 104 N/m
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a. during a lunar eclipse. b. with a coronagraph. c. using filtergrams. d. a and b above e. none of the above
A block is given a very brief push up a 20.0° frictionless incline to give it an initial speed of 12.0 m/s
(a) How far along the surface of the plane does the block slide before coming to rest? (b) How much time does it take to return to its starting position? What will be an ideal response?
3.0 moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol?K) and a molar heat capacity at constant pressure of 6.9 cal/(mol?K)
starts at 300 K and is heated at constant pressure to 320 K, then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process? A) 710 cal B) -720 cal C) 0.00 cal D) 120 cal E) -120 cal
A supertanker filled with oil has a total mass of 6.1 × 10^8 kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the bottom of the ship is below sea level. (?sea = 1 020 kg/m3.)
a. 10 m b. 15 m c. 20 m d. 25 m e. 30 m