One kilogram of the explosive TNT supplies an explosive energy of about 4.2×10^6 J. Let’s see what that energy can achieve in lifting objects from Earth’s surface to altitudes of hundreds of kilometers. We approach the issue through gravitational potential energy. Assume the acceleration due to gravity is constant at g = 9.81 m/s2 from Earth’s surface up to an altitude of 510 km above the surface. (A satellite at such an altitude would be in a “low Earth orbit.”) What is the gravitational potential energy, in joules, of a 1.0-kg object at that altitude, taking the reference level for gravitational potential energy (U = 0) at Earth’s surface.

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

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Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants