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A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 7:57. When used with 120 V (rms) household service, the transformer draws an rms current of 350 mA. Find the following.
(a) rms output voltage of the transformer
_____V
(b) power delivered to the CD player
_____W
the blood plays an important role in removing heat from th ebody by bringing the heat directly to the surface where it can radiate away. nevertheless, what is the thermal conductivity of this persons skin
A "torsional pendulum" comprises a uniform vertical quartz fiber attached to the top of a uniform solid sphere of mass m = 2 kg and radius r = 0.1m. what is the angular amplitude of the subsequent motion
A converging lens with a diameter of 30.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
question1a neutron star has a mass of 2.0 1030 kg about mass of our sun and a radius of 5.4 103 m about the height of a
Consider the particle that is constrained to move along a curve described by y = x4. Find the equation of motion for small displacement about equilibrium
The two 10-cm-long parallel wires are divided by 5.0 mm. For what value of the resistor will the force between the two wires be 1.08×10-4 N.
A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 14.0 N force directed 25.0° below the horizontal, Determine the work done by the applied force
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. What is the mass of the meter stick
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
If a pipe wrench of length 18 cm is positioned vertically on pipe, with the handle pointing up, and a force of 150 N, what is the torque on the pipe
In 9.00 days the number of radioactive nuclei decreases to one-eight the number present initially
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