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The owner of a van installs a rear-window lens that has a focal length of -0.295 m. When the owner looks out during the lens at a person standing directly behind the van, the person appears to be now 0.242 m from the back of the van, and appears to be 0.339 m tall.
1) How tall is the person?
2) How far from the van is the person actually standing?
The moment arm of the should abductor muscles is approximately 5 cm from the axis of roation of shoulder joint, calculate the horizontal component of the joint reaction force
A 57-kg water skier is being pulled by a nylon tow rope that is attached to a boat. The unstretched length of the rope is 11 m, What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
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in a particular region of earths atmosphere the electric field above earths surface has been measured to be 140 nc
An applied force F1= 16N acting on an object with the mass m = 2 kg which is moving on the surface of a table. find the coefficient of friction between the object and the table
There is a specific case where for a single converging lens the object distance equals the image distance. Find the relation between the focal length and the object distance in this case
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
A current of 15.0 mA is maintained in a single circular loop with a circumference of 3.30 m. find the magnitude of the torque exerted by the magnetic field on the loop
A 10 g bullet moving 1000 m/s strikes and passes through a 2.0-kg block initially at rest, as shown. The bullet emerges from the block with a speed of 400 m/s. How much energy was lost in the collision
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