Physics, 30.11.2019 02:31 daverius3153
The motivation for isaac newton to discover his laws of motion was to explain the properties of planetary orbits that were observed by tycho brahe and analyzed by johannes kepler. a good starting point for understanding this (as well as the speed of the space shuttle and the height of geostationary satellites) is the simplest orbit--a circular one. this problem concerns the properties of circular orbits for a satellite orbiting a planet of mass m.
for all parts of this problem, where appropriate, use g for the universal gravitational constant.
part a) find the orbital speed v for a satellite in a circular orbit of radius r. (express the orbital speed in terms of g, m, and r),
part b) find the kinetric energy k of a satellite with mass m in a circular orbit with radius r. (express your answer in terms of m, m, g, and r).
part d) find the orbital period t. (express your answer in terms of g, m, r, and pi).
part f) find l, the magnitude of the angular momentum of the satellite with respect to the center of the planet. (express your answer in terms of m, m, g, and r.
part g) the quantities v, k, u, and l all represent physical quantities characterizeing the orbit that depend on radius r. indicate the exponent (power) of the radial dependence of the absolute value of each. (express your answer as a comma-separated list of exponents corresponding to v, k, u, and l, in that order.
Answers: 3
Physics, 22.06.2019 05:30
An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?
Answers: 2
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
Physics, 22.06.2019 16:30
Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
Answers: 2
The motivation for isaac newton to discover his laws of motion was to explain the properties of plan...
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