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A stone is dropped from the roof of a tall building. A second stone is dropped 2.50 second later. Calculate how far apart the stones are when the second one has reached a speed of 11.0 m/s?
A heater runs on an AC voltage of 120 V and draws a power of 26 W. If this heater were run instead on a DC voltage of 70 V, how much current would flow through the heater? Hint: The heater can be modeled as a resistor.
An air-filled spherical capacitor is constructed with an inner-shell radius of6.50cm and an outer-shell radius of15.0cm. What potential difference between the spheres results in a 4.00-µC charge on the capacitor
Estimate, from these data, the effective distance between the atoms.
Illustrate what tangential speed v must the bob have so that it moves in a horizontal circle with the string making an angle 19.0^circ with the vertical?
Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more.
question a child throws a ball downward from a tall building. note that the ball is thrown not dropped and disregard
An electrical cable consists of 184 strands of fine wire, each having 3.47 µ? resistance. What is the resistance of the cable
A molecule of DNA is 2.17 micrometers (10^-6 meters)long. The ends of the molecule become singly ionized -negative on one end, positive on the other. Determine the effective spring constant
A uniform solid sphere rolls without slipping down a 19° inclined plane. What is the acceleration of the sphere's center of mass
Two balls are on a frictionless horizontal tabletop. Ball X initially moves at 10 meters per second, which angle and at what velocity will ball y move
Radio station WQED in Pittsburgh broadcasts at 89.3 MHz with a radiated power of 43.0 kW. What is the magnitude of the momentum of each photon?
A rock is dropped from a tree of height 25 m into a lake (depth 5.0 m) below. What is the total elapsed time
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