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An iron bar 40 cm long is braised to a copper bar 40 cm long and of the same diameter. The free end of the iron bar is kept at 0 oC while the free end of the copper bar is at 100 oC.
A) What is the temperature of the junction point?
B) What is the heat flow down the rod if its cross-sectional area is 1.50 cm2?
Illustrate what is the concentration of sodium and chloride ions at a distance 3 angstroms from protein surface.
A small button placed on a horizontal rotating platform with diameter 0.328 will revolve with the platform when it is brought up to a rotational speed of 45.0 rev/min , provided the button is a distance no more than 0.141m from the axis. a)What is..
If half the potential energy of this water were converted into electric energy, explain how much electric power would be produced by these falls?
Albert pushes a 6-kg box across a level floor. He pushes with a force of 43 newtons, and observes that the box accelerates in the direction of his push, What must be the net force acting on the box
The four tires of an automobile are inflated to a gauge pressure of 2.1 105 Pa. Determine the weight of the automobile
A 40 kg child sits in a swing suspended with 2.5 m long rope. Use energy conservation to determine the speed the child will have at the bottom of the arc when she is let go
A 4.20 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest, What is the mass of the second sphere
What tension is necessary to tune string properly
Katie and Emily are riding on a circular merry-go-round that has a radius of 5m. Katie is on a horse that is 2.5m from the center of merry-go-round and Emily is on a tiger that is 4.5 m from the center of the merry-go-round. What is Katie's tangen..
Liquid nitrogen boils at 77.00 K. Would this experiment needs to be altered if we used water, which boils at 373 K? Why.
the speed of light in a certain material is measured to be 2.2*10^8 m/s. what is the index of refraction of this material
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
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