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A 70 kilogram astronaut is standing on a scale in a spaceship. While the ship is moving in a straight line with a constant velocity of100 m/s near a large planet, the scale reads 300 Newton. The ship then accelerates away from the planet at 7 m/s squared. Determine what does the scale read now?
What is used up electric potential energy of charge carriers
A solar energy "farm" produces 1.0 MW of power for a small town. What total area of solar cells is required
Calculate the energies and speeds of electrons in circular Bohr orbits in a hydrogenlike atom using the relativistic expressions for kinetic energy and momentum
Two infinte parallel plates separated by a distance sare at potentials 0 and V0, What are the charge densities on the plates
If a star formation switched off in a spiral galaxy, which part of it would get fainter? Bulge, disk, halo, dark matter or globularclusters? What is the essential dissimilarity between formation of spiral and elliptical galaxies?
A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 58° with the normal to the wall. What is the beam's pressure on the wall
a test rocket is launched by accelerating it along a 200.0 m incline at 1.78 ms2 starting from rest at point a. the
Two identical spheres each carry a charge of -40.0 µC. The spheres are separated by a distance of 1.00 m. What is the electric force between the spheres
when an aluminum object is fully submersed in a pool of oil with density 700 kgm3 and place on a scale at the bottom of
a parallel plate capacitor has an air dielectric. the capacitor is charged with surface charge density s0 and then the
A jeweler working with a heated 43 gram gold ring must lower the ring's temperature t make it safe to handle. If the ring is initially at 94 degrees Celsius, what mass of water at 22 degrees Celsius is necessary to lower the ring's temperature to 38 ..
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of 2.2 m2, while surface 2 has an area of 3.5 m2.
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