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To focus a camera on objects at dissimilar distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera by a telephoto lens (f=200.0mm) is to be focused on an object located first at a distance of 3.5m and then at 50.0m. Over what distance should the lens be movable?
An AC generator supplies an rms voltage of 230 V at 50.0 Hz. It is connected in series with a 0.650 H inductor, a 6.00 ?F capacitor, What is the peak voltage across the capacitor
A 7.0 kilogram box slides a 14 meter distance on ice. If the coefficient of kinetic friction is 0.24, evaluate what is the work done by the friction force
A pilot of mass 70kg pulls out of a dive following a circular path of radius 850m and at a speed of 200m/s. what is the force that the pilot feels
A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.33 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A rectangular block of wood, 10 cm*15 cm*40 cm, has a specific gravity of 0.6. What fraction of the block is submerged
A standing wave on a tight string experiment is set up in thelaboratory. One end of the string is attached to an oscillatorthat vibrates with a frequency of 60 Hz. What is the wavelength of the standing wave
A person can focus clearly only on objects between 37.5cmand 51.0cm from his eyes. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision
At one instant, a system has 30J of kinetic energy and 30J of potential energy. How much work was done by conservative forces
On a drive from your home to town, you wishto average 33.6 mph. The distance from yourhome to town is 90miles. However, at 45miles(half way), you find you have averaged only25.2 mph.
Suppose a satellite is in a circular orbit 5.175 Earth radii above the surface of the Earth, By how much does it have to increase its speed
a neon sign uses a step up transformer with a turns ratio of 50. the sign is plugged into a standard wall outlet at
A duck is floating on a lake with 28% of its volume beneath the water. What is the average density of the duck
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