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A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.11 diopters, and the lens-to-retina distance is 1.791 cm. (a) How far is the blackboard from her eyes? (b) If the writing on the blackboard is 6.44 cm high, what is the height of the image on her retina?
For reference LWR: thermal efficiency is 33%, power 1150 MWe, 92% CF, uranium is $46/lb. U3O8, SWU is $114/kgSWU, conversion is $12/kgU, fabrication and transportation cost $295/kgU, losses in fabrication 0.12%
A dime is placed in front of a concave mirror that has a radius of curvature R = 0.15 m. Determine the distance between the dime and the mirror
Find the speed of a satellite moving in a circular orbit just above the surface of The Earth. The Earth has a radius of 6.38 106 m and a mass of 5.97 1024 kg
1.01 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.09 rad/s , compute rotational kinetic energy of the rolling hoop in Joules
A toy cannon uses a spring to project a 5.31-g soft rubber ball. The spring is originally compressed by 5.04 cm and has a force constant of 7.96 N/m. At what point does the ball have maximum speed
A weight lifter does a series of arm raises while holding a 3.00 weight. Her forearm (including the hand) starts out horizontal and pivots to a vertical position about her elbow. What is the change in its gravitational potential energy with each ar..
The small piston of a hydraulic lift has a diameter of 8.70 cm , and its large piston has a diameter of 44.0 cm. Determine the pressure applied to the fluid in the lift
A heavy box is pulled across a wooden floor with a rope. The rope makes an angle of 60o with the floor. A force of 75N is exerted on the rope. find the component of the force parallel to the floor
A diverging lens (f = -12 cm) is located 20 cm to the left of a converging lens (f = 35.0 cm). A 3.00 cm tall object stands to the left of the diverging lens, exactly at its focal point.
The owner of a van installs a rear-window lens that has a focal length of -0.300 m. How far from the van is the object actually located
The displacement of a particle in meters moving along x axis is given by x=18t+5t^2, calculate instantenaous velocity at t=2 seconds and instantaneous accelration
An AC generator supplies 215 V peak voltage at 125 Hz frequency. How much power is dissipated in a resistor with R=165 ohms resistance connected to the generator
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