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A series LR circuit with L = 20 mH and R = 2.0 k? is connected to a potential source of amplitude 5.0 V and angular frequency 200 rad/s. Use a phasor diagram to calculate the amplitude and phase of the current. Answer the following questions
a.) What is the voltage across the resistor and the inductor?
b.) What is the voltage across the inductor at the instant when the voltage across the resistor is maximum?
what is the distance of closest approach of the two particles. explain two ways in which you could you this equipment to raise the crate.
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
Calculate escape velocity for an object started at the surface of the earth, going straight up. Neglect any complications due to the earth turning.
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
Two equal length strips of aluminum and steel are heated. Which expands more? How much more - that is, by what factor is one expansion greater than the other?
If the exospheric temperature is 1500 K and the hydrogen atom and helium atom densities at 500 km are 10^4 cm^3 and 10^6 cm^3 respectively,
A sphere of radius 6.21 cm and uniform surface charge density, Find the separation between the point charge and the center of the sphere
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm. What is the period of the oscillation
How high is the sun above the horizon to a fisherman. What is the coefficient of kinetic friction between tires and pavement.
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. Find the filament's temperature
100 volts of ac are put across a 100 turn transformer, what is the ac current drawn by the primary coil
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