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A meteoroid is first observed approaching the earth when it is 402,000 km from the center of the earth with a true anomaly of 1500. If the speed of the meteoroid at that time is 2.23 km/s, calculate (a) the eccentricity of the trajectory; (b) the altitude at closest approach; and (c) the speed at the closest approach.
A positive charge Q = 6400.00 C is uniformly distributed over the volume of a sphere of radius R =1.50 m. Assume a spherical cavity of radius R/2 is cut out of the solid sphere, the center of the cavity being a distance R/2 from the center of the ori..
A hot-air balloon is sinking toward the ground at a speed of 3.05 m/s, when the pilot drops a couple of sandbags overboard. How far did the balloon fall during that time
A hydraulic lift is used to jack a 920 kg car 42 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 350 N. What is the area of the input piston
A car initially traveling eastward turns north by traveling in a circular path at uniform speed, Determine the car's average speed
A railroad car of mass 2.44 104 kg, is moving with a speed of 3.96 m/s. It collides and couples with three other coupled railroad cars, What is the speed of the four cars after the collision
a 4.20-g bullet embeds itself in a 20.0-kg block which is attached to a horizontal spring with a force constant of 950
he rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically r=0.002. How far will the locomotive move during this time
What is the electric field strength at a point in space where a proton experiences an acceleration of 1.5 million "g's"?
What is the speed and momentum of a proton with kinetic energy 500 MeV, What is the de Broglie wavelengeth of the proton
Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. What is the force of the water on the dolphin as it is coming to rest
a centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. such a
A 2 centimeter tall object is located in front of a mirror. A 1 centimeter tall upright image is formed behind the mirror, 180 centimeter from the object. Evaluate the focal length of the mirror
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