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An anatomist is viewing heart muscle cells with a microscope that has two selectable objectives with refracting powers of 100 and 320 diopters. When she uses the 100 diopter objective, the image of a cell subtends an angle of 3 10-3 rad with the eye. What angle is subtended when she uses the 320 diopter objective?
A cable is connected at point A (1,2,3) and pulls towards point B (7,7,-1) the force in the cable is 100 pounds.
the earth rotates once per day about an axis passing through the north and south poles an axis that is perpendicular to
Two 500 g block of wood are 2.0m apart on a frictionless table. A 10g bullet is fired at 400 m/s towards the blocks. What is the speed of the second block after the bullet stops
At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod.
A 200g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant before it broke
an electron moves in the positive x-direction a distance of 2.43 m in 2.99middot10-8 s bounces off a moving proton and
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.05 x 10^4 rad/s to 3.14 x 10^4 rad/s. In the process, What is the frequency of red light with a wavelength in vacuum of 600 nm
A small 12.3 g plastic ball is tied to a very light 28.6 cm string that is attached to the vertical wall of a room, Find the magnitude and direction of the electric field in the room
question1a concave mirror is made by coating the inner surface of a segment of a spherical shell with a reflecting
A 6.0-uF air capacitor is connected across a 100-V battery. Afterthe battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectricconstant = 4.5).
Light of wavelength 650 nm is incident above at an angle of 90 upon a glass plate as shown below. The glass plate rests on top of a second plate so that they touch at one end and are seperated by .0325mm at the other end as shown in the figure.
A stationary proton is accelerated through a potential difference of 83.5 KV. what speed did the proton acquire by using work-energy theorem
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