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A 2.5-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the spring/mass system is 2.6 J. Determine is the elastic potential energy of the system when the 2.5-kg block is replaced through a 5.5-kg block?
Imagine that a relativistic train travels past your lecture room at a speed of 0.887 c. The passengers of the train claim that when they measure the length of the train using standard meter bars found on the train, the length comes out to be 85.8 ..
A uniform electric field of magnitude 271 V/m is directed in the negative x direction. A +12.7 ?C charge moves from the origin to the point (x, y) = (15.5cm, 46.0 cm). What was the change in the potential energy of this charge?
Two air track carts move along an air track one behind the other. Cart A has a mass of 0.450 kg and moves toward the right with a speed of .850 m/s and behind cart A is cart B. It has a mass of 0.300 kg and moves toward the right with a speed of 1.23..
A train moving at a constant speed of 63.0 km/h moves east for 33.0 min, then in a direction 41.0° east of due north for 24.0 min, and then west for 44.0 min. What is the average velocity of the train during this run? Magnitude 1 km/h Direction 2° (c..
business equipment for a $5,000 loss, stock investment for a $7,000 loss, and her principal residence for a $16,000 loss. Presuming adequate income, explain how much of these losses may Joan claim on her 2011 return?
X rays diffract from a crystal in which the spacing between atomic planes is 0.179nm. What is the angle of the first-order diffraction
1. a double loop of wire of radius 40 mm lies in a plane perpendicular to a uniform magnetic field. the field changes
How many electrons should be transferred from the plate. When you enter your answer, leave off the unit rm dB.
At six flags over Georgia near Atlanta, the weellie cariespassengers in a circular path with a radius of 7.7m. the ride makesa complete rotation every 4.0s (a ) what is a passengers angularvelocity due to the circular motion? (b) what acceleration..
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.18 m2 and whose thickness is 7 mm. what is the percentage lost by the window
An archer's bow is drawn at its midpoint until the tension in the string is 0.835 times the force exerted by the archer. What is the angle between the two halves of the string
A 52.0 kg ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.0 turns each second. The distance from one hand to the other is 1.50 m. Biometric measurements indicate that each hand characterist..
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