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When a 2.50 kg object is hung vertically on a certain light spring described by hooke's law, the spring stretches 2.76 cm. What's the force constant of the spring?
assume a bar 2.5 m long expands 0.5 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
A toy cannon uses a spring to project a 5.28 g soft rubber ball. The spring is originally compressed by 5.06 cm and has a force constant of 8.08 N/m. At what point does the ball have maximum speed
question1a golf ball with an initial angle of 30deg lands exactly 214 m down range on a level course.a neglect air
Suppose I have three small objects of equal mass m. I place them on a massless, rigid, circular hoop of radius R. what is the moment of inertia for the whole system
suppose after charging a 4 microf capacitor to 9 v you connect it to the second uncharged capacitor of 11 microf. what
venus and the sun are separated by a distance of 0.7 au. where along the path between these two celestial objects does
A gas expands, changing its volume by +4.24×10-4 m3 while at a constant pressure of 6.44×105 Pa. What is the work done by the surroundings on the gas
An air conditioner draws 19A at 220-V ac. The connecting cord is copper wire with a diameter of 1.291mm, If the length of the cord (containing two wires) is 6.5m , how much power is dissipated in the wiring
A step-down transformer has 30 turns of wire on one coil and 1200 turns on the other. what is the required rms input voltage
Particles of charge Q1 = +65 µC, Q2 = +43 µC, and Q3 = -80 µC are placed in a line. The center one, Q2, is 0.35 m from each of the others. find the net force on each charge due to the other two
In a science fiction novel , a starship takes 3 days to travelbetween two distant space stations according to its own clocks. How fast did the starship travel, relative to the spacestation
A laboratory technician drops a 0.0770-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. The calorimeter can, initially at 23.0°C, is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of th..
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