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An aluminum rod and a copper rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held fix at 100°C, and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.83 m long, Determine what must be the length of the aluminum rod thus that the temperature at the junction is 50°C? m
an electron is moved from point a where the electric potential is va -280 v to point b where the electric potential is
The electric field within the membrane separating the inside and outside of a biological cell is approximately 7.8MV/m, what is the potential difference across the membrane
A car travels at 40 km/h for 30 min and 60 km/h for 15min. How far does it travel in this time
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. What is the speed of the rider at the top of the loop
a disk is spinnning at a rate of 10 rad/s. a second disk of the same mass and shape, what is the final angular velocity of the two disks
A popular pastime is to see who can push an object closest to the edge of a table without its going off. You push the 100 g object and release it 1.00mm from the table edge. If the coefficient of kinetic friction is 0.500, what was the object's sp..
A ball of mass m makes a head-on elastic collision with a second ball (at rest), What is the mass of the second ball
the pupil of an eagles eye has a diameter of 6.0 mm. two field mice are separated by 0.010 m. from a distance of 161 m
A horizontal beam of electrons initially moving at 3.9 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates as shown in the diagram. The magnitude of the field is 1.70 104 N/C.
determine the acceleration of the moon toward earth using values for its mean distance and orbit period from the
An irregularly shaped body of mass 1.50 kg is mounted on an axle located 21.0 cm from the center of gravity of the body. Find the body's moment of inertia about this axis
A spring with an unstrained length of 0.070 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
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