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Helium gas enters an adiabatic nozzle steadily at 500 degrees C and 600 kPa with a low velocity, and exits at a pressure of 90 kPa.
Uranium is one the rarer elements in the earths crust, where it occurs mainly as the oxide uraninite (U3O8). In 1938, Otto Hahn and Fritz
The positions of two blocks at successive 0.20 second time intervals are represented by numbered squares in the diagram below.
The kinetic energy of a rigid body rotating about a noncentroidal axis through O can be expressed as the mass moment of inertia.
A 3.00-kg mass and a 5.00-kg mass hang vertically at the ends of a rope that goes over an ideal pulley.
What are the advantages and disadvantages to nuclear power?
A football is kicked at an angle of 50 degrees and travels a distance of 20 m before hitting the ground.
The most famous equation in all of the natural sciences is probably:
In airplane traveling at 529 km/hr needs to reverse its course. The pilot decides to accomplish this by banking the wings at an angle of ? = 41.0.
A rifle bullet with mass .010 kg strikes and embeds itself with a block of mass .990kg which rests on a frictionless horizontal surface
The car with its passengers is traveling along a horizontal road when it suddenly runs onto a new piece of road surface, raised 5.5 cm above the old surface.
Two masses are attached with a pulley over an incline which is over a platform. The top of the incline to the ground is 6m.
Why do astronomers infer that the Sun's energy comes from nuclear fusion reactions? How do we know it does not come from chemical burning?
Consider a nuclear power plant that produces 1000 MW of power and has a conversion efficiency fo 30%
If each fission of a 235nucleons 92protonsU nucleus releases about 2.0e2 MeV of energy, determine the energy (in joules) released by the complete fissioning
The semicircular disk having a mass of 10 kg is rotating at ? = 4 rad/s at the instant T = 60° .
When 1.0 kg of coal is burned, about 3.0e7 J of energy is released. If the energy released per 23592U fission is 2.0e2 MeV
How long will it take the spacecraft to catch up with the projectile, and how far will it have traveled by then?
Sam heaves a 16-lb shot straight upward, giving it a constant upward acceleration from rest of 45.0 m/s2 over a distance of 64.0 cm.
Explain why free-fall acceleration can be regarded as a constant for objects falling within a few hundred meters of Earth's surface.
Families of finite square wells. A particle of mass m has N quantized energy levels in a one-dimensional square well of depth V_0 and width L. N is more than 10
Objects A and B are both positively charged. Both have a mass of 500 g, but A has twice the charge of B. When A and B are placed 50.0 cm apart.
Suppose that the potential seen by a neutron in a nucleus can be represented (in one dimension) by a square well of width 10^12 cm with very walls
If the human cannonball spends 0.812 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.
Consider a small, natively disordered protein that exists in equilibrium with a highly ordered (folded) protein. At 37°C, the ratio of the disordered protein