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A nearsighted person wears glasses to correct the problem. The lenses in the glasses have a focal length of -520 cm and are worn 2.0 cm from the eyes. With the glasses the person can see an object clearly that is very far away. How far from the eyes is the person's far point located?
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
A piece of metal is pressed against the rim of a 2.8- kg, 25- cm-diameter grinding wheel that is turning at 2800 rpm. how much force must you press to stop the wheel in 20.0 s
A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again.
A stamp collector uses a lens with 7.5-cm focal length as a simple magnifier. The virtual image is produced at the normal near point (25 cm). What is the expected angular magnification
A shaving mirror is a concave mirror used to give someone a close up view of their face. how far is the man's face from the mirror
A steel cable with total length,52 mand mass,130 kgis connected to two poles. Calculate the wavelength of the resulting wave on the cable
A circuit is connected in parallel with two capacitor C1=6F and C2=3F with seperate switches S1,S2 and has a voltage of 20V. capacitor C1 is first charged by closing switch S1. switch S1 is then opened , and charged capacitor is connected to the un..
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
a 250-kg motorcycle goes around an unbanked turn of radius 13.7m at a steady 96.5 km/h. What is the magnitude of the net force on the motorcycle?
A large, cylindrical roll of tissue paper of initial radius R lies on a long, horizontal surface with the outside end of the paper nailed to the surface. Determine the speed of the center of mass of the roll
A string with a mass of 31 g and a length of 2 m is stretched under a tension of 67 N. How much power must be supplied to the string to generate a traveling wave that has a frequency of 51 Hz and an amplitude of 4 cm.
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