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You are designing a pendulum clock escapement. You have determined that the pendulum must have a period of .600s. What should be the length of the thing?
A strong electromagnet produces a uniform magneticfield of 1.60 T over a cross-sectional area of 0.200 m2.We place a coil having 210 turns and atotal resistance of 23.0 Ω aroundthe electromagnet.
Suppose you have two equal mass objects both on a gentle incline. One is a glider on an air track while the other is a ball on a straight slope. Explain what type of energy both objects have
An unstable particle called the pion has a mean lifetimeof 25 ns in its own restframe. What is the mean lifetime of the pions as measured in thelaboratory frame
A circular wire loop whose radius is 10.0 cm carries current of 2.10 A. Calculate the magnetic dipole moment of the loop
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
A steel wire 2.00m long with circular cross section must stretch no more than 0.260cm, What minimum diameter must this wire have
a parallel plate capacitor has a capacitance of 7uf when filled with a dialectric. the area of each plate is 1.5 square
consider the earth and a cloud layer 800 m above the planet to be the plates of a parallel-plate capacitor.a if the
Use the Hubble law, the apparent visual magnitude of +12.9 and the observed redshift z = 0.158 to estimate the absolute magnitude of the quasar 3C 273 (which is the brightest quasar known). Compare the luminosity of 3C 273 with that of the Androme..
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, What is the initial kinetic energy of the car
The mass has a kinetic energy of 17.0 J as it passes through its equilibrium position (the point at which the spring force is zero). At what rate is the spring doing work on the mass
an electron initially traveling in the x-direction with a speed of 4 x 105 ms enters a uniform electric field directed
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