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A 508.6 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. the scaffold weighs 386.7N and is 3.11m long. assume the windo washer stands 1.26m from one end. what is the force on the farther rope? answer in units of N.
When a carbon dioxide molecule attaches to a molecule of hemoglobin, the bond that forms between them immediately starts vibrating. What is the vibration frequency of the bond if the carbon dioxide molecule has speed of 2.42 m/s
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
A 5.4 m-long rod of (constant diameter 4.6 mm) is made of 2.0 m of copper and the remainder of aluminum (see above). What is the heat flow rate through the composite rod
A 3.00kg mass is pushed against a horizontal spring of force constant 23.0N/cm on a frictionless air table. What is the greatest acceleration of the mass
A 120 kg hiker puts on a pair of snowshoes that have an effective combined surface area of 0.80 square meters. How much pressure does he exert on the snow
90 kW of power is delivered to the other side of a city by apair of power lines with the voltage difference of 13942.8 V. What is the voltage change along each line
A 4.5m long, non uniform beam weighing 750N, supported by two weighing cables, is at rest in horizonal position as shown . The cable on the right has a tension of T1=650 N.
The coefficient of static friction between the sole of an athletic shoe and the basketball court floor is 0.67. how large is the friction force exerted by Ken's shoes on the floor
A wedding ring (of diameter 1.7 cm) is tossed into the air and given a spin, resulting in an angular velocity of 12 rotations per second. The rotation axis is a diameter of the ring. Taking the magnitude of the Earth's magnetic field to be 4.3 10-5 T..
A child on roller skates undergoes an acceleration of 0.8 m/s2 due to a horizontal net force of 20 N. What is the mass of the child
An iron wire has a cross-sectional area equal to 3.50x10^-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire, Calculate the drift speed of conduction electrons in this wire
if the maximum height from which a person can jump without a parachute and still survive is 7.50 meters the maximum
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