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The figure below shows a three-particle system, with masses m1 = 2.5 kg, m2 = 4.0 kg, and m3 = 9.0 kg. (a) What are the coordinates of the center of mass?
A skater has rotational inertia 4.2 kg?m2 with his fists held to his chest and 5.7 kg?m2 with his arms outstretched. how fast will he be spinning
A shel is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. Determine the initial speed of the shell
A copper rod has a length of 1.4 m and a cross-sectional area of 3.8 10-4 m2. One end of the rod is in contact with boiling water and the other with a mixture of ice and water. What is the mass of ice per second that melts
Each of the three helicopter rotor blades shown in Fig. 10-67 is 5.20 m long and has a mass of 195 kg. The rotor is rotating at 228 rev/min. What is the total kinetic energy of rotation
Two 3.5 kg bodies, A and B, collide. The velocities before the collision are A = (21 + 30) m/s and B = (-34 + 11) m/s. After the collision, ′A = (-4.5 + 16) m/s.
planet zero has a mass of 5.0 x 10 ^23 kg and a radius of 2.0 x 10 ^6 m. What is the speed of the probe when it is 3.0 x 10^ 6 m from zeros center
A 30 k? resistor has a current of 63 mA passing through it. Determine the voltage drop across the resistor
Dan lifts a mass of 10 kg vertically upward at a constant speed of 0.2 m/s through a distance of 1 m. What is the work done by Dan
What is the car's maximum speed on an incline. A fire hose held near the ground shoots water at a speed of 5.4 m/s, At what angle(s) should the nozzle point in order that water land 2 m away.
In preparation for this problem, review Conceptual Example 7. A space traveler whose mass is 115 kg leaves earth. What are his mass in interplanetary space where there are no nearby planetary objects
An electric field of 8.55x10^5 V/m is desired between two parallel plates, each of area 35.00 cm^2 and separated by 2.45mm of air. What charge should be on each plate.
A hydraulic ram 200mm in diameter and 1.2 m long moves wholly within a concentric cylinder 200.2mm in diameter, What is the viscous force resisting the motion when the ram moves at 120mm . s-1
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