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A crane of mass mc = 3400 kg supports a load of ml = 11300 kg as in Figure. The crane is pivoted with a frictionless pin at A and rests against a smooth support at B. Find the reaction forces at A and B.
find the velocity of their center of mass before the collision.
A woman measures the angle of elevation of a mountain top as 12 degrees. After walking one km closer to the mountain on level ground, she finds the angle to be 14 degrees. Select variable names for the two pictures.
A 7.80-g bullet moving at 480 m/s penetrates a tree trunk to a depth of 4.5 cm. find the average frictional force that stops the bullet
A generator supplies 140 V to a transformer's primary coil, which has 70 turns. If the secondary coil has 610 turns, what is the secondary voltage
A force vector points at an angle of 50.4° above the +x axis. It has a y component of +289 Newton's. Calculate the magnitude of the force vector
a spring is hanging vertically from a ceiling. assume the springs mass is negligible. i hang a 0.5kg mass on the spring
An unknown substance has a mass of 0.125 kilogram and an initial temperature of 87.4°C. compute the specific heat of the unknown substance
The temperature of a 2.8 m copper pipe is raised from 46?C to 873?C. What is its change in length
At the bottom, it hits another stationary car with equal mass. The two cars have Velcro and stick together. At what speed do the two cars move after the collision
A concave mirror has a radius of curvature of 11.5 centimeter. Draw a ray diagram to find the position of the image
Pete slides a crate up a ramp at an angle of 23.1 degree by exerting a 138 Newton force parallel to the ramp. The crate moves at constant speed. Compute how much work has been done against gravity
A diver springs upward from a three-meter board. At the instant shecontacts the water her speed is 8.90m/s, How much time does she spend in the air
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