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When a patient is being fitted with contact lenses, thecurvature of the patient's cornea is measured with an instrumentknown as a keratometer. A lighted object is held near the eye, andthe keratometer measures the magnification of the image formed byreflection from the front of the cornea. If an object is held11.0 cm in front of a patient's eye,and the ratio of the height of the reflected image to that of theobject is 0.027, what is the radius of curvature of the patient's cornea?
________? mm
A 31 kg child sits in a swing supported by two chains, each 4.5 m long. If the tension in each chain at the lowest point is 243N, find the childs speed at the lowest point
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hours to go around the earth. what is the force of gravity on this satellite
A series RLC circuit is driven by a voltage of amplitude 5V. If w(omega)= 1000s^-1, L = 5H, C=3muF and R =2komega. Find the amplitude of the current. Find the amplitude of the voltages across the capacitor, inductor, and resistor Find the phase diffe..
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. Determine the tension in the strings
What is the kinetic energy of α particle while it reaches the other plate? The distance between the plates is 33 cm.
The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 6.1 cmfrom the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at..
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 92 km/h. What is the frequency of the car horn
a 30 kg crate is pulled across a flat floor with 80 n of force. the coefficient of kinetic friction between the crate
Two 10-cm-diameter charged rings face each other,15.0 cm apart. Both rings are charged to + 50.0 nC. What is the electric field strength at the midpoint between the two rings? at the center of the left ring?
Find out the edge dimension of each cube
A uniform 2.15- kg spinning disk with a radius of 0.233 m is brought to rest by a brake-pad pressed against the side 0.149 m from the rotation axis. What frictional force was applied by the brake pad
an rlc oscillator circuit contains a 63.0 ohm resistor and a 1.80-mh inductor. what capacitance is necessary for the
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