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A uniform drawbridge must be held at a 36.5 degree angle above the horizontal to allow ships to pass underneath. The drawbridge weighs 4.85×104 N, is 20.0 m long, and pivots about a hinge at its lower end. A cable is connected 3.70 m from the hinge, as measured along the bridge, and pulls horizontally on the bridge to hold it in place.
- What is the tension in the cable?
- Find the magnitude of the force the hinge exerts on the bridge.
- Find the direction of the force the hinge exerts on the bridge.
- If the cable suddenly breaks, what is the initial angular acceleration of the bridge?
A falling stone takes 0.28 s to travel past a window 2.2 m tall. From what height above the top of the window did stone fall.
q1. two 75.0 w 120 rm v light bulbs are wired in series then the combination is connected to a 230 v supply. how much
A wave has angular frequency 135 rad/s and wavelength 1.70 m. Calculate the following values of the wave. estimate the angular wave number
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68 10-27 kg.
The bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.70 of what would be found in a similar live animal. How old are these bones.
500 mL of a liquid with a coefficient of volume expansion of 267x10-6/oC fills to the brim a container that has a coefficient of volume expansion of 99x10-6/oC. how much of the liquid will overflow the container
A helium-filled toy balloon has a gauge pressure of 0.400 atm and a volume of 8.0 liters. How much greater is the internal energy of the helium in the balloon
A horizontal power line of length 52 m carries a current of 1.4 kA, find direction of the magnetic force on the power line
The electric potential on the surface of a conductor (in static equilibrium) is 5V. find electric potential in the interior of the conductor
A man at point A directs his rowboat due north toward point B, straight across a river of width 100 m. While the man is crossing the river, what is his velocity relative to the shore
A horizontal slingshot consists of two light, identical springs (with spring constants of 27.7 N/m) and a light cup that holds a 1.47-kg stone, determine the system's total mechanical energy
You are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 22.7-m tall building, What is the angular acceleration of the drum
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