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A hobby telescope has an objective lens with a focal length of 76cm and an eyepiece with a focal length of 8.2mm. We view the planet Jupiter with this telescope. We do this at the time of year when we are closest to Jupiter. (a) Find the diameter of the image of Jupiter produced by the objective lens. (b) Find the angular size of Jupiter as viewed through the eyepieces. (c) How far should I place a marble (1-cm diameter) from my eye to obtain the same angular size as in part (b)?
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
An ideal gas occupies 0.14 m3 at an absolute pressure of 1.2×105 Pa and temperature 280 K, How many moles of gas are there
bill steps off a 3.4 m high diving board and drops to the water below. at the same time ted jumps upward with a speed
What is the lenght of the driveway. An electric field = (89000 N/C, right) causes the ball in the figure below to hang at a 20° angle. The ball's mass is 4.7 g. What is the charge on ball.
a cube of edge length 2.1 cm is positioned as shown in the figure below. there is a uniform magnetic field throughout
An electron confined in a one-dimensional box emits a 400nm photon in a quantum jump from n=1 to n=2. What is the length (L) of the box in nm
Calculate the electric flux through the circle when its face is perpendicular to the field lines and then when at 45 degrees to the field lines
a wedge-shaped sliver of glass viewed from above is illuminated with 436-nm light. the sharp edge is dark. what is the
A hall sensor made from silicon is 0.40 nm thick and has a charge carrier density of 2.0 x 10 ^19 m^-3. What is the value of the magnetic field
an accelerator increases the total energy of electrons uniformly to 10 gev over a 3000 m path. that means that at 30 m.
q1. a woman rides a carnival ferris wheel at radius 13 m completing 4.0 turns about its horizontal axis every minute.
A 2.5-kg block is attached to a spring with k=100 N/m and compress it with a distance of 0.40 m. What is the mechanical energy of the block
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