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An 8.0 kg object is moving in the positive direction of an x axis. When it passes through x = 0, a constant force directed along the axis begins to act on it. Figure gives its kinetic energy K versus position x as it moves from x = 0 to x = 5.0 m; K0 = 30.0J. The force continues to act. What is v when the object moves back through x = - 3.0m?
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
Zach, whose mass is 55kg , is in an elevator descending at 14m/s. What is Zach's apparent weight while the elevator is braking
Use the value of the Sun's luminosity (3.90×10^26 watts, or 3.90×10^26 joules per second) to calculate what mass of hydrogen the Sun will convert into helium during its entire main-sequence lifetime of 1.2×10^10 years.
The coldest and hottest temperatures ever recorded in Lithuania are 45.2°F (230 K) and 99.5°F (311 K), correspondingly. Compute the speed of sound in air at each temperature
A solid cylinder ABCD (radius: 0.150 m, height: 0.120 m) has the mass of 7.00 kg. How much of the height of the cylinder is in the oil
a person pushes a 24.5-kg shopping cart at a constant velocity for a distance of 39.8 m on a flat horizontal surface.
A 2kg piece of ice @ 0C (273K) is placed in 27C (300k) body of water. Latent heat of fusion is 334kJ/kg. What is the work done by the ice
2 parallel-plate capacitors, identical except that one has twice the plate separation of the other, are charged by the same voltage source. Which capacitor has a stronger electric field among the plates? Which capacitor has a greater charge? Which ha..
As part of a carnival game, a 0.578-kg ball is thrown at a stack of 24.3-cm tall, 0.343-kg objects and hits with a perfectly horizontal velocity of 11.6 m/s. find the center of mass velocity of the tall object
A string with linear density 2g/m is stretched along the positive x-axis with tension 20 N. One end of the string, at x = 0, is tied to a hook that oscillates up and down at a frequency of 100 Hz with a maximum displacement of 1.0 mm. At t = 0s, t..
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.21 10-3 g. Find the mass density inside the box
A 0.016-kg bullet traveling at 203.6 m/s east hits a motionless 1.9-kg block and bounces off it, retracing its original path with a velocity of 100.7 m/s west. What is the final velocity of the block
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