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Consider the arrangement of ideal massless cables and a 450cm long 10kg horizontal iron bar, which are used to hang a bucket of water from two walls. What are the tensions in all the cables if 50kg of water is placed in the bucket? What is the vertical force that each of the walls exerts on the iron rod? Each cable is 200cm from wall closest to them with 50cm separating them. One cable is 40cm and the other is 30cm with the bucket hanging 20cm below where the cables meet.
Design a circuit in which the output voltage leads the input voltage by 30° and the current by 90°. The input voltage is a cosine wave with an angular frequency of ?. You must show (1) the phasor diagram (2) the circuit (3) the relationship betwee..
A camera has a f=50 mm (f=5 cm) lens. A 1.0 mm (0.1cm) tall ant is 200 mm (20 cm) from the lens. Where should the film be placed
Express your answer with the appropriate units.
A swimming pool has dimensions 26.0 m â?? 9.0 m and a flat bottom. The pool is filled to a depth of 1.70 m with fresh water. What is the force exerted by the water on each side
Compute the linear momentum and angular momentum of a Frisbee of mass 0.158 kg if it has a linear speed of 1.60 m/s and an angular velocity of 54.0 rad/s
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 15.0° below the horizontal. Find the length of time the car is in the air
Find the diameter of an aluminum rod that would conduct heat at the same rate as a 2.816 cm diameter copper rod of the same length
A proton accelerates from rest in a uniform electric field of 625 N/C. At one later moment, its speed is 1.25E+06 m/s. Over what time interval does the proton reach this speed
q1. a krypton laser produces the cylindrical red laser beam 2.0mm in diameter with 2.0w of power. what is the light
Two wires made of the same material are stretched by equal forces. The second wire is twice as long as the first one, by how long is the second wire stretched
A 40 cm long tube has a 40 cm long insert that can be pulled in and out. As the insert is slowly pulled out, What is the frequency of the tuning fork
Assume an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 18.5g.
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