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A horizontal boom 8 ft long is attached to a wall at its inner end and is supported at its outer end by a cable that makes an angle 30° with the boom. The boom weighs 60 lb, and a load of 500 lb is attached to its outer end. Find the (a) tension T in the cable and (b) the compression force F in the boom.
An electromagnetic wave has an electric field given by E? (y,t)=[ 3.60×105V/m cos(ky?(1.250×1013rad/s )t)]k^. In which direction is the wave traveling
a 1.0 kg object is moving with a constant velocity 2.0 m/s toward the north. what is the second force that acts on the object
An arrow is shot vertically upward and then 2.06 s later passes the top of a tree 41.3 m high. How much longer will the arrow travel upward
a 3.49 kg 25.33 cm diameter turntable rotates at 221 rpm on frictionless bearings. two 700 g blocks fall from above hit
What are the errors in the energy transformation using electrically heated calorimeter experiment (energy transfer between electrical and heat energy) ? ( container was closed and there was an outer covering to the metal to prevent heat loss)
A student tries to raise a chain consisting of three identical links. Each link has a mass of 240 gram. Determine the acceleration of the chain
Two plane mirrors M1 and M2 are parallel to each other with M2 on the right of M1. The mirrors are 30 cm apart. A pin is placed between the mirrors 7.5 cm from M2. Calculate the distance of the second image from each mirror.
A stone with a mass of 0.900 kg is attached to one end of a string 0.800 m long. Find the maximum speed the stone can attain without breaking the string
Three capacitors {C1 =6.00 uf, C2 =12.00 uf, and C3 =18.00 uf} are connected in series, and in turn connected to a 24 V source. determine the potential and charge on each capacitor
A Styrofoam box has a surface areaof 0.84 m2 and a wallthickness of 2.0 cm. find what is the thermal conductivity of the Styrofoam
A beam of light in air reflects off of a piece of glass whose index of refraction is 1.42. What angle of incidence will give complete polarization of the reflected light?
A laser emits a narrow beam of light. The radius of the beam is 1.0 mm, and the power is 2.8 mW. What is the intensity of the laser beam
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