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Question: We can detect a visual binary system with an earth- orbit baseline parallax or 0.25''. The systems orbital period is 779.9 days and we see the combined semi- major axis subtend a total angle of 1.254''. What is the mass of the two stars?
A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. What is the amplitude of the subsequent oscillations
A rock is thrown straight up with an initial velocity of (5.0 m/s)i + (10 m/s)j from a deck that is 25.0 m above the ground. how high does it reach above the deck? At its maximum height how far has it moved horizontally (i.e. in the i direction)?
a dog wishes to swim across a slow moving stream. the dog can swim at 2.0ms in calm water. the current velocity is
A strut having a mass of 40kg/m is supported by a cable, as shown. The structure supports a block having a mass of 500kg. Find the force in the cable and the horizontal and vertical reactions at the pin-connection at B. Neglect the mass of the ca..
If an object is moving with constant momentum ‹ 8, ?14, ?4 › kg · m/s, What is the net force acting on the object
A 60 cm long steel rod with a diameter of 4 cm is mated to a 40 cm long Cu rod with the same diameter. the unmated end of the steel rod( not at the interface) is connected to a 140 degrees C heat source, while the far end of the Cu( not at the int..
2.00-mol sample of helium gas initially at 300 K, and 0.500 atm is compressed isothermally to 2.00 atm. Noting that the helium behaves as an ideal gas, find (a) the final volume of the gas, (b) the work done on the gas, and (c) the energy transferred..
A 2.9 μF capacitor has a voltage of 52 Volt between its plates. Determine what must be the current in a 4.5 mH inductor
two loudspeakers a and b are driven by the same amplifier and emit sinusoidal waves in phase. the frequency of the
A ladder 2.85 m long, weighing 228 N, initially lies flat on the ground. Compute the work done by the force lifting the ladder
An interference filter is constructed from two semi reflecting mirrors (r2 = 0.5) separated by a film of plastic which has an index of refraction of 1.35. Determine the thickness of the plastic film for the first two orders of interference
Three 3 uC charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 uC charge. Find the electric field at the center of the square
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