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To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera with a telephoto lens (f = 190.0 mm) is to be focused on an object located first at a distance of 3.5 m and then at 47.0 m. Over what distance must the lens be movable?
Calculate Earth's average speed relative to the Sun (in m/s). According to my book, the answer is 3.0x10^4 m/s
q1. a ford mustang can accelerate from 0 to 60 in a time of 5.4. a mini cooper isnt capable of such a rapid start but
You are riding on a Jet Ski at some angle upstream on a river flowing with a speed of 2.8. Assume the Jet Ski is moving at a speed of 12 relative to the water. At what angle should you point the Jet Ski if your velocity relative to the ground is t..
A ball of mass m = 3 kg is attached to a vertical pole by two ropes and moves in a horizontal circle at a constant speed. Find the tension in the lower rope
A gas is enclosed in a container fitted with a piston of cross-sectional area 0.13 m2. find the amount of heat removed from the compression
A 12.0 kg box resting on a horizontal, frictionless surface is attached to a 5.00 kg weight by a thin, After the system is released, find the horizontal tension in the wire
A 72.4-kg skier coasts up a snow-covered hill that makes an angle of 23.2 ° with the horizontal. The initial speed of the skier is 8.14 m/s. What is the magnitude of the kinetic frictional force
A kid balances on a pogo stick. His mass combined with the mass of the pogo stick is 22kg. How much pressure does the pogo stick put on the ground
Adjacent antinodes of a standing wave on a string are 15.0 cm apart. Find the maximum and minimum transverse speeds of a point at an antinode
A hypodermic syringe is attached to a needle that has an internal radius of 0.301 mm and a length of 3.05 cm. What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s
question1an airplane in a wide outside loop can create an apparent zero weight inside the aircraft cabin. what should
A boy of mass 60.8 kg is rescued from a hotel fire by leaping into a firefighters' net. The window from which he leapt was 9.5 m above the net. What is the average force on the net due to the boy during the interval
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