Estimate the speed at which the drag on a 150-g steel ball becomes equal to about 1% of its weight. (The density of steel is about 7900 kg/m3, and C for a sphere is about equal to 0.5.) Take the density of air to be 1.2 kg/m3. The speed is m/s.
Estimate the speed at which the drag on a 150-g steel ball becomes equal to about 1% of its weight. (The density of steel is about 7900 kg/m3, and C for a sphere is about equal to 0.5.) Take the density of air to be 1.2 kg/m3.
The speed is m/s.
34. A space probe near the earth has values of E, L, and m such that L/m = 7.5 × 1010 m2/s and 2E/m = 0. Find the eccentricity of this orbit and the radius of the closest point of the orbit to the earth, and classify the orbit as elliptical, parabolic, or hyperbolic.
The eccentricity of the orbit is______ and the orbit is ______Choose one (.Elliptical, Parabolic, Hyperbolic)
The radius of the closest point of the orbit to the earth is _______ km.
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