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Two wires A and B are of equal length. Each is attached at one end to the ceiling and to a weight at the other end. The cross-sectional area of A is 2.00 mm2 and that of B is 4.00 mm2. The Young's modulus for wire A is 1.80 x 1011 Pa and for B is 1.20 x 1011 Pa. If the weight suspended from wire A is 2.00 kg, what would the weight attached to wire B need to be to produce a) equal stresses in A and B and b) equal strains in A and B? Explain steps as you go.
A fisherman's scale stretches 4.2 cm when a 2.6 kg fish hangs from it. What will be the amplitude and frequency of vibration if the fish is pulled down 3.0 cm more and released so that it vibrates up and down
an object is 18cm in front of a adiverging lens that has a focal length of -12cm. how far in front of the lens should the object be placed
Find the energy of a photon that is emitted when an electron in a hydrogen atom undergoes a transition from the n=7 level
A horizontal spring-mass system oscillates on a frictionless table. If the mass is 3.8 kg, the spring constant is 100 N/m, find the maximum extension of the spring
Two identical spaceships are traveling in the same direction. An observer on Earth measures the first to have speed 0.80c, What is the speed of the second spaceship
Classify two organizations with similar problems but from different countries. Analyze political, social, ethical and legal differences facing both organizations and determine the impact these differences have on management decision making.
Knowing the temperature at the surface of the Earth to be 72 F, find the temperature at the surface of Venus. ( show your work step by step.)
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.8and accelerates at the rate of 6.3 , and it is in contact with the pottery wheel (radius 28.0 ..
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 49 m in a straight line, Determine the cheetah's average acceleration during the short sprint
Light of wavelength 480 nm in air falls ontwo slits 6 * 10^-2 mm apart. How far apart are the fringes on the screen
A 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water.
An electrician connects two different bulbs in seriesto 120 V circuit. One bulb is rated as 40 W for a nominal voltage 220V, Which of the two bulb is producing more light
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