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A 75.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 28 V, what is the resistance R of the resistor?
a battery with an internal resistance rint can be modeled as an ideal battery in series with a resistor rint suppose a
question a rock is tossed off the top of a cliff of height 34.5m. its initial speed is 29.1ms and the launch angle is
An electric charge is uniformly distributed throughout a 12cm radius non conducting sphere. what is the volume charge density of the sphere
A 23.0 kg child plays on a swing having support ropes that are 2.10 m long. How fast will she be moving at the bottom of the swing
If the humidity in a room of volume 685 m3 at 25°C is 40percent, what mass of water can still evaporate from an openpan
if the radius of the equipotential surface of point charge is 13.5 m at a potential of 2.10 kv what is the magnitude of
A soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal. How far over does it land on the ground?
an ideal gas of molar mass m is located in a uniform gravitational field whose free fall acceleration is g. a find the
A curling stone slides on ice with a speed of 2.0 m/s and collides inelastically with an identical,stationary curling stone. What fraction of the initial energy is lost in this collision
A whistle of frequency 520 Hz moves in a circle of radius 80.0 cm at an angular speed of 12.0 rad/s. What are the lowest and highest frequencies heard by a listener a long distance away from the whistle and at rest with respect to the center of th..
In 1994, Susan Williams of California blew a bubble-gum bubble with a diameter of 58.4 cm. what would the tangential speed of those points be
1. a spring with negligible mass stretches 34.0 cm when a 144 g gram mass is suspended from it. now inbspsuspend a
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