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1.) A 100-kg box on the right and a 45-kg box on the left are tied together by a horizontal cable. The 100-kg box is acted upon by an external force of 560 N to the right. The frictional force exerted by the floor on the 100-kg box is 40 N and the frictional force exerted by the floor on the 45-kg box is 15 N. What is the magnitude of the tension in the connecting cable?
2.) Two people play tug of war. The 100-kg person on the left pulls with 1,000 N, and the 70-kg person on the right pulls with 830 N. Assume that neither person releases their grip on the rope with either hand at any time, assume that the rope is always taut, and assume that the rope does not stretch. What is the magnitude of the tension in the rope in Newtons?
3.) A 69-kg woman in an elevator is accelerating downward at a rate of 1.3 m/s2. What is the magnitude of the force exerted by the elevator floor on the woman's feet?
4.) In a fit, a toddler throws straight down his favorite 2 kg toy with an initial velocity of 1 m/s. What is the magnitude of the velocity in m/s of the toy when it strikes the ground 0.5 seconds later?
question an aqueous solution containing barium iodide bai2 is electrolyzed in a cell containing inert electrodes. the
A 90.0- and a 45.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.376 A. When the 45.0- resistor is disconnected, the currentfrom the battery drops to 0.131 A.
Would you expect cavitation in the pump to be a problem? Assume standard atmospheric pressure. Explain how you arrived at your answer.
A photon of initial energy 0.10 MeV undergoes Compton scattering. After scattering, the photon's energy is 0.09 MeV. Find the recoil energy of the electron
question a 1.60 kg mass is attached to a light cord that is wrapped around a pulley of radius 6.80 cm which turns with
Earth's perihelion passed about nine hours ago. How precisely do we know the moment of closest approach of the Earth to the center of the sun? How do we make this measurement?
"Hollywood" cinema is wrought by a tension within the system, that between commerce and art. As such, the "genius of the system" (to use Schatz's phrase) is a confluence of ideological and aesthetic modes of representation. Discuss this propositio..
One end of a cylindrical pipe has a radius of 1.5 cm. Water (density = 1.0×103 kg/m3) streams steadily out at 7.0m/s. The rate at which mass is leaving the pipe is: One end of a cylindrical pipe has a radius of 1.5 cm. Water (density = 1.0×103 kg/m3)..
Derive the table values using the equations. You may use a friction factor given in Fig. for the elastomer inner tube of the hydraulic hose.
A biologist is studying the growth of rats in an orbiting space station. To determine a rat's mass, she puts it in a 330g cage, what is the rat's mass
An airplane flies 200km due west from city Band then 285 km in direction of 28 degrees north of west from city B to city C. in a straight-line distance how far is city C from city A.
For t ≥ 0 the step response of the voltage across the capacitor in Figure is vC(t) = 10-20e-10,000t V. Find the IV, FV, TC, R, and iC(t) when C = 0.15 μF
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