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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 45.0-kg girl is standing on a 158-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the surface of ice
A spherical cavity of radius 4.00 is at the center of a metalsphere of radius 18.5 . A point charge 6.00 rests at the very center of the cavity, whereas the metal conductor carries no netcharg Determine the electric field at a point 2.00 from the ..
A 12.0-V battery remains connected to a parallel plate capacitor with a plate area of 0.134m2 and a plate separation of 3.64mm. How much energy is stored in the capacitor
suppose you wish to make a solenoid whose self-inductance is 1.5 mh. the inductor is to have a cross-sectional area of
A spring has a force constant of 104 N/m. Determine the distance when potential energy is: 50 J, 100 J
A proton with mass 1.67×10−27 kg and charge 1.60×10−19 C accelerates from rest in a uniform electric field of strength 500 N/C. (a) What is the magnitude of the acceleration of the proton? (b) How long does it take the proton to reach a speed of 35,0..
a spool of wire of mass m250 g and radius r45 cm is unwound under a constant force f 5.0 n. assume that the spool is a
An Earth satellite moves in a circular orbit 847 km above Earth's surface with a period of 101.7 min. What is the speed of the satellite
A man stands on the roof of a building of height 16.6 m and throws a rock with a velocity of magnitude 25.6 m/s at an angle of 32.5 degrees above the horizontal. find the maximum height above the roof reached by the rock
A diffraction grating is made up of slits of width 290 nm with separation 910 nm. How many maxima are there in the full diffraction pattern
question the work function of sodium is 2.23 ev. what is the longest wavelength that a photon may have if it is to
A microscope has an eyepiece of focal length 2.00 cm and an objective of focal length 3.00 cm. How far from the eyepiece is the image formed by the objective
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