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A scaffold of mass 60 kg and length 5.5 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 72 kg stands at a point 1.0 m from one end.
(a) What is the tension in the cable closer to the painter (in Newtons)?
(b) What is the tension in the cable further from the painter (in Newtons)?
a ball is tossed directly upward at an initial speed of 5.7m/s and is caught when it falls back down to the throwers hand, how much total time is the ball airborne
A flat piece of glass covers the top of a vertical cylinder that is completely filled with water, What is the smallest value of the incident angle theta_a for which none of the ray refracts into the water
In what direction should the plane head in order to fly.
approximately what is the mass of an object whose weight equals the force from part "b"? can you lift such a mass.
What is the new momentum of the puck. What is the length of pipe.
Two converging lenses, each of focal length 14.9 cm, are placed 39.4 cm apart, and an object is placed 30.0 cm in front of the first lens. What is the magnification of the system
how fast the air flow over the upper surface of the wing. What is the coefficient of kinetic friction between the box and the floor.
A particular heat engine has a mechanical power output of 6.00 kW and an efficiency of 28.0%, Find the energy taken in during each cycle
A 24.0V battery is in series with a switch, a 0.30Hinductor, and a 24? resistor. Find the potential differences across the inductor at t=3
What is the speed of the arrow as it leaves the bow?
A water pipe having a 2.60 cm inside diameter carries water into the basement of a house at a speed of 0.827 m/s, find water pressure (in kPa) at the second floor
A horse canters away from its trainer in a straight line, moving 150m away in 14 sec. It then turns abruptly and gallops halfway back in 4.5 sec.
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