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The Very Large Array (VLA) is a set of 30 dish radio antennas located near Socorro, New Mexico. The dishes are spaced 1.0 km apart and form a Y-shaped pattern, as in the diagram. Radio pulses from a distant pulsar (a quickly rotating neutron star) are detected by the dishes; the arrival time of each pulse is recorded using atomic clocks. If the pulsar is located 44.0° above the horizontal direction parallel to the right branch of the Y, how much time elapses among the arrival of the pulses at adjacent dishes in that branch of the VLA?
a 8 kg brick moves along an x axis. its acceleration as a function of its position is shown below. what is the net work
The primary coil of a transformer hasN1=360turns, and the secondary coil hasN2=1 890turns. what rms voltage is developed across the secondary coil
A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor of 2.9. What is the final pressure of the gas relative to its intitial pressure?
A 310-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,150 A, how many years does it take one electron to travel the full length of the cable
The speed of a sound in a container of hydrogen is 201K is 1220m/s. what would be the speed of sound if the temperature were raised to 405K? suppose that hydrogen behaves like an ideal gas.
A circular surface with a radius of 0.062 m is exposed to a uniform external electric field of magnitude 1.55 104 N/C, What is the angle between the direction of the electric field and the normal to the surface
A hollow aluminium cylinder 20 cm deep has an internal capacity of 2.000 L at 20.00C. It is completely filled with turpentine and then warmed to 80.00C. (i) How much turpentine overflows? (ii) If it is then cooled back to 20.00 C, how far below th..
A 15 V constant voltage battery is connected to 120 kΩ resistora. How many electrons pass through the resistor each second
A spherical brass shell has an interior volume of 1.60 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.86 x 10-3 m3. The space between the steel ball and the inner surface of the brass shell is filled completel..
A ladder of length L = 2.5 m and mass m = 15.0 kg rests on a floor with coefficient of static friction ?s = 0.57. Assume the wall is frictionless. What is the minimum angle to keep the ladder from sliding
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
A 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created.
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