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A spring with a string constant of 23 N/m is stretched from equilibrium to 2.9 meter. Evaluate how much work is done in the process?
Calculate the energy in of a photon of radiation. A projectile is fired straight upward at 141 m/s. How fast is it moving at the the top of its trajectory? assume it is launched upward at 45 degrees about the horizontal plane. How fast is it moving..
An oil well is 10,000 ft deep. It is shut-in at the wellhead. What is the gauge pressure of the oil at the wellhead, before the valve
A radioactive material produces 1200 decays per minute at one time, and 6 h later produces 300 decays per minute. What is its half-life?
A horizontal mass-spring system has low friction, spring stiffness 250 N/m, and mass 0.370 kg. The system is released with an initial compression of the spring of 10.8 cm, What is the maximum speed during the motion
The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure due to the ocean at a depth of 9.5 km
9.75-m ladder with a mass of 23.2 kg lies flat on the ground. Apainter grabs the top end of the ladder and pulls straight upwardwith a force of 245 N. What is the ladder's moment of inertia
A long, straight wire lies in the plane of a circular coil with a radius of 0.050 m. The wire carries a current of 6.0 A and is placed along a diameter of the coil. What is the net flux through the coil
At a certain location, the Earth's magnetic field has a magnitude of 5.8×10^-5, Find the magnitude of the magnetic flux through the top of a desk at this location that measures 140cm by 77cm
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ..
The brightest star in the night skyis Sirius, which is at a distance of 8.30×1016 m. how far back in time are we seeingit
At a given time, t_0, sample A contains 750,000 radioactive nuclei. During the 1 hour before t_0, a total of 280,000 decays were observed from this sample. Calculate the half-life of the radioactive material
A supertanker filled with oil has a total mass of 1.04 109 kg. If the dimensions of the ship are those of a rectangular box 235 m long, 76 m wide, how far the bottom of the ship is below sea level
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