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the mirror of the reflecting telescope has a 2.4 m radius of curvature and the eyepiece has a focal length of 20mm. The telescope is used to view a crater of the moon. the final image is viewed at inifinity. The angle subtended by the final image of the crater is 12 mrad. The distance of the moon from the earth is 380,000 km.
A) The diameter of the crater in km is closest to?
High jumpers usually sustain fractures in the lower third of the fibula. The world record for the high jump is held by Javier Sotomayor (Cuba) at 2.45 m (1993). what is the stress in the fibula
a 120 g copper calorimeter cup contains 220 cm3 of water and 35 g of ice all in thermal equilibrium. a 185 g piece of
Two beams of coherent light are shining on the same piece of white paper. With respect to the crests and troughs of such waves, where darkness will occur on the paper
A nearsighted person cannot see objects clearly beyond 20.7 cm (her far point). What type of lens is required to correct her vision
How far must it now sail to reach its original destination. find the potential energy of the system.
A 6.30 x 10 -5 H solenoid is constructed by wrapping 54 turns of wire around a cylinder with a cross-sectional area of 6.4 x 10-4 m2. Determine the change in the length of the solenoid
a small object of mass 3.46 g and charge -18.4 oc is suspended motionless above the ground when immersed in a uniform
The three major forces acting are shown. FM = 80 N, w = 45 N. Calculate the direction and magnitude of the force supplied by the upper vertebrae FV to hold the head stationary, assuming that it acts along a line through the center of mass as do th..
An ore sample weighs 14.00 N inair. When the sample is suspended by a light cord and totallyimmersed in water, Find the total volume and the density of the sample
A child whose weight is 270 N slidesdown a 6.2 m playground slide that makesan angle of 20° with the horizontal. If she starts at the top with a speed of 4.97 m/s, what is her speed at the bottom
You have two 120V light bulbs, one 25W and one 100W, that are normally connected in parallel with 120V across each. Your friend had what seemed like a good idea which was to connect them in series across a 240V power line. However, one of them burned..
A conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that ..
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