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A 2500-kg probe in orbit about the moon is 2.4 m high and has octagonal bases of sides 1.2 m. The coordinate axes shown are the principal centroidal axes of inertia of the probe, and its radii of gyration are kx = 0.98 m, ky = 1.06 m, and kz = 1.02 m. The probe is equipped with a main 500-N thruster E and with four 20-N thrusters A, B, C, and D which can expel fuel in the positive y direction. The probe has an angular velocity ω = (0.040 rad/s)i 1 (0.060 rad/s)k when two of the 20-N thrusters are used to reduce the angular velocity to zero. Determine
(a) which of the thrusters should be used,
(b) the operating time of each of these thrusters,
(c) for how long the main thruster E s hould be activated if the velocity of the mass center of the probe is to remain unchanged.
Place the following temperatures in order from least to greatest, and explain what each temperature represents using thermodynamically sound principles:
A capacitor consisting of two parallel plates connected to a 9V battery has a capacitance of 4 X 10-6 Farad. What is the charge of the capacitor?
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Vectors A and B have scalar product -3.00 and their vector product has magnitude 5.00. What is the angle between these two vectors
Two charged bodies separated by a distance d exert an electrical force on each other. The charge on one of the bodies is doubled. The electrical forces on each body now
The position of an object moving in a straight line is givenby x=2.0-3.6t+1.7t2, where x is in meters and t is in seconds. What is the average velocity for the interval
Calculate the work done on a gas, the change in internal energy of the gas, the heat added to the gas, and the change in entropy of the gas when 1.12 moles of oxygen
A person is doing strength training of knee extensor muscles. He sits on a bench, with a weight attached to his ankle. In what position of the leg will the gravitational torque about the knee joint be maximum?
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