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A vertical cylinder of cross-sectional are a 0.050m^2 is fitted by a tight-fitting, frictionless piston of mass 5.0 kg. If there are3.0 mol of an ideal gas in the cylinder at 500 K, decide the height h at which the piston will be in equilibrium under its own weight.
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm; what force is exerted by the biceps muscle
What is the classical acceleration of the electron in a hydrogen atom, separated from the proton by 5.29 x10?11 m? Electron mass = 9.11 x10?31 kg
the ball launcher in a pinball machine has a spring that has a force constant of 1.23 ncm. the surface on which the
A hot-air balloon is rising straight up with a speed of 1.47 m/s. Aballast bag is released from rest relative to the balloon when itis 9.87 m above the ground. How much time elapses before theballast bag hits the ground?
A building is about 336 meter high. Determine by energy considerations the kinetic energy of a 10 kg object after it has fallen 100 meter from this building
A 30 g ball of clay traveling east at 2.0 m/s collides and sticks together with a 30 g ball of clay traveling north at 4.0 m/s. What is the speed of the resulting ball of clay
q1. one reasonable design goal for an imaging system is to match the air disk diameter to the detector size. that
IP Suppose a planet is discovered that has the same amount of mass in a given volume as the earth, but has radius 1/6 R Earth. Calculate the acceleration due to gravity on this planed
A person of mass 73kg stands at the center of a rotating merry-go-round platform of radius 3.5m and moment of inertia 950kg kg m^2. Calculate the rotational kinetic energy of the system of platform plus person after the person's walk
a 1.0-cm-tall object is 20cm in front of a converging lens that has a 10cm focal length. use ray tracing to find the
Breathing deep, your professor inhales air at 0.203 m/s. As the air goes through a constriction in his bronchus, it doubles in speed. How much does the air pressure drop in the constriction
Total required annual electrical energy output from the wind farm =120 TJ Max number of turbines for which there is space on the farm =20. Average annual wind speed at the site= 9.0 ms^-1
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