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A camera has a lens with a focal length of 22.2 cm. When an object is placed 3.55 meters away is being photographed, how far from the film should the lens be placed? Give your answer in cm
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
create destructive interference between the speakers. Friction provides the force required for a car to travel around a flat, circular race track.
A box weighing 77.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exert on the box if the weight hanging on the other side of the pulley ..
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
A steel cable is to support an elevator whose total (loaded) mass is not to exceed 3100 kg. calculate the diameter of cable required
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
A uniform 270N ladder rests against a perfectly smooth wall, making a 40.0? angle with the wall. What is the friction force on the ladder at the floor
Due to the nature of the wastewater, the engineer wants to target the high end of this range. Find the proper diameter pipe to the nearest 2” (e.g., 2”, 4”, 6”, 8”, 10”, etc.) to achieve this design objective.
An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 145 km/h. exactly 2.5 s after the speeder passes, police officer steps on accelerator; if the police car's acceleration is 2.10m/s^2.
A 1,699-kg satellite orbits the Earth in a circular orbit with a period of 6,016 s. How high above the Earth's surface is the satellite's orbit
A 580-turn solenoid is 30 long and 1.9 in diameter and carries 67. How much magnetic energy does it contain
An archer wishes to shoot an arrow at a target at eye level a distance of 49.0 m away. what angle should the arrow make with the horizontal as it is being shot
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