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A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar.What is the radius of curvature of the mirror?And could you please include the ray diagram for this problem?
Two equal length strips of aluminum and steel are heated. Which expands more? How much more - that is, by what factor is one expansion greater than the other?
A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 22 degrees.If the mirror is now rotated so that the angle of incidence increases by 5.0 degrees, what is the new angle between t..
The work needed to remove an electron from the surface of sodium is 2.3 eV. How big maximal velocity will have electrons if the surface of sodium will be illuminated with ultraviolet light wave length
A person has far points 72.1cm from the right eye and 97cm from the left eye. What are the powers of the corrective lenses
A 800kg , light-weight helicopter ascends from the ground with an acceleration of 3.50m/s2. What is the work done by the net force on the helicopter?
if an inductor has a change of current 0.418 A to 0.948 and has an inductance of 1.324, what is the change in energy that the inductor is storing
A square metal plate 0.180 m on each side is pivoted about an axis through point O at its center and perpendicular to the plate. Calculate the net torque about this axis due to the three forces shown in the figure if the magnitudes of the forces are ..
To correct myopia, is it necessary to move the image formed by the eye closer to or farther from the eyes lens system, Is the curvature of this lens concave or convex
In 2.0 minutes, a ski lift raises six skiers at constant speed to a height of 175 m. The average mass of each skier is 65 kg. Illustrate what is the average power provided by the tension in the cable pulling the lift?
How much heat transfer is nec to raise the temp of a .200kg piece of ice from -20C to 130C including the energy needed for phase changes
A circuit consists of a resistor in series with an inductor and an ac generator that supplies a voltage of 115 V. Find the average power delivered in the circuit
The oscillations of an actual spring-block system slowly reduce in amplitude and finally the system comes to a halt. What happens to the energy of the system
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