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The current in a coil with a self-inductance of 1 mH is 3.6 Amp at t = 0, when the coil is shorted through a resistor. The total resistance of the coil plus the resistor is 9.0 capitalomega.
(a) Determine what the current after 0.5 milliseconds.
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. What is the work done by the field on the electron
A spring is compressed by 0.0541 m and is used to launch an object horizontally with a speed of 2.80 m/s. If the object were attached to the spring, at what angular frequency (in rad/s) would it oscillate?
A 56 kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. determine her altitude as she crosses the bar
A frictionless pulley has the shape of a uniform solid disk of mass 6 and radius 25 . A 1.90 stone is attached to a very light wire that is wrapped around the rim of the pulley.
A point charge of +6.3? C is located 0.31 m from a second point charge of -4.8? C. What is the absolute magnitude of the force on each charge?
A grating has 787 lines per centimetre. Find the angles of the first three principle maxima above the central fringe when this grating is illuminated with 655-nm light.
A physics lecture room has a volume of 251m^3. Calculate the mass of the air in the room
A liter of water has a mass of 1 kg and the mass of a water molecule is 18 amu. How many molecules of water are there in 2 L of water
there are two small objects charged that repel each other they both have a force f and are separated by a distance d.
0.700-kg ball traveling horizontally on a frictionless surface approaches a very massive stone at 20.0 m/s perpendicular to wall, What is the magnitude of the change in momentum of the stone
A guitar string is 108 cm long and has a mass of 3.4 g. From the bridge to the support post (L) is 70 cm, What is the frequency of the first overtone
A CD originally at rest reaches an angular speed of 40rad/s in 5.0s. What is the magnitude of its angular acceleration
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