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Two figure skaters, one weighing 625N and the other 775N , push off against each other on very smooth ice.
Part AIf the heavier skater travels at 1.60m/s , how fast will the lighter one travel?v = _________m/sPart BHow much kinetic energy is "created" during the skaters' maneuver?K = _________JPart CWhere does this energy come from?
A railroad car of mass 3.0 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
In the figure below, the converging lens' focal length is 13 cm, d = 18 cm, and the diverging lens' focal length is -12.6 cm, How tall is the image formed by the diverging lens
A 2.20 sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as heart beats. The reflected sound is after that mixed with the transmitted so..
You fill up your gas tank in Europe when the euro is worth $1.25 and gasoline costs 1.33 euros per liter. What is the cost of gasoline in dollars per gallon
The wing of an airplane has an average cross-sectional area of 11 m2 and experiences a lift force of 86,000 N. What is the average difference in the air pressure
A football is kicked with a speed of 20m/s at an angle of 40 degrees to the horizontal, how long is the football in the air
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 4.30 × 105 kg
A 3.62m long organ pipe is open on both ends. the fundamental frequency is 47Hz, and Find its first three overtone frequencies
find coefficient of kinetic friction between m1 and shelf.
A 10-uF, a 20-uF, and a 50-uF capacitor are connected in series across a 160 volt source. What value of charge is on each capcitor
If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it
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