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A copper rod, an aluminum rod, and a brass rod, each of 6.00 m length and 1.00 cm diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at water"s boiling point, and the free end of the brass rod is maintained at water"s freezing point. What is the steady-state temperature of
(a) the copperaluminum junction and
(b) the aluminum-brass junction?
A flask of volume 2.0 liters, provided with a stopcock, containsoxygen at 20 degree celcius, 1.0 ATM. how many grams of oxygen remain in the flask
two spherical shells have a common center. a -2.5 10-6 c charge is spread uniformly over the inner shell which has a
A cheerleader does a handstand on other cheerleader’s hands. If the lower cheerleader weighs 180 lbs and the vertical ground reaction force is 1300 N, what should the top cheerleader's mass be to have equilibrium?
A 30 gram bullet initially traveling at 500 m/s penetrates 12 cm into a wooden block. Use Work Energy theorem and find the average force it exerts on the wooden block
Two round concentric metal wires lie on a tabletop, one inside the other. The inner wire has a diameter of 18.0cm and carries a clockwise current of 14.0 A, as viewed from above, and the outer wire has a diameter of 38.0 cm.
A stone used to grind wheat into flour is turned through 12 revolutions by a constant force of 21.6 N applied to the rim of a 9.2-cm-radius shaft connected to the wheel
a 4 kg box is pushed up a frictionless 30 degree incline with a force of 40n. this 40 n force is parallel to the
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 80.0cm. At what rate is the flywheel spinning when the power comes back on
Compute the deflection angle a from a distant star that would, according to general relativity, by an observer on the moon as the light grazes the edge of the earth.
A spacecraft orbits an unknown planet at a distance of 5.2 x 10^7 m from its center. The period of its orbit is 52 hours. What is the mass of the planet
A world-class sprinter can burst out of the blocks to essentiallytop speed (of about 11.5 m/s) in the first 15.0 m of the race. how long does it take her to reach that speed
The gravitational field caused by a planet or other body (such as the moon) can be calculated using: gfield2 G is the universal gravitational constant in Newton's law of gravity. What is the gravitational field strength near the surface of Venus
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