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In a certain compound microscope, the object is 9.0 mm from the objective. The lenses are 265 mm apart and the intermediate image is53.0 mm from the eyepiece. What overall magnification is produced?
Two plane waves have the same omega, k and amplitude E, but opposite circular polarisations (i.e. left and right). Show that the superposition of the two waves is linearly polarised, with amplitude 2E.
A small drop of oil is suspended motionless in the air by a uniform electric field that is directed upward and has a magnitude of N/C, What is the mass of the drop
A small ball of mass 62 g is suspended from a string of length 37 cm and whirled in a circle lying in the horizontal plane. If the string makes an angle of 33? with the perpendicular, find the centripetal force experienced by the ball. The accelerati..
A comet of mass 1.3 1010 kg moves in an elliptical orbit around the Sun. Its distance from the Sun ranges between 0.545 AU and 79.0 AU. What is the eccentricity of its orbit
Calculate the inductance of a solenoid that is 1.0 cm long and 3.2 mm in diameter, with 210 turns of wire
A constant force of 25 N is applied as shown to a block which undergoes a displacement of 7.5 m to the right along a frictionless surface while the force acts. What is the work done by the force
(from Roger Ordidge, with alterations) The magnetic field can store energy, but it can do no work. Therefore, another agency must be responsible for doing the work that puts the energy into the magnetic field. In order for the energy in the field ..
How greatly time elapses before the compass hits the ground
A model rocket is fired vertically from rest. It has a net acceleration of 15.0 m/s2. After 1.1 s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
three identical metal spheres are charged so that sphere a has a charge of 290 oc sphere b has a charge of -200 oc and
Two uniform infinite sheets of electric charge densities 48.0 C/m2, Find the magnitude of the electric field everywhere
Find the final displacement from the starting point. How much greater was the distance she walked than her displacement.
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