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You are taking a photograph of a poster on the wall of your dorm room, so you can't back away any farther than 2.0 m to take the shot. The poster is 0.40 m wide and 0.60 m tall, and you want the image to fit in the 24 × 36 mm frame of the film in your camera.
What is the longest focal length lens that will work?
a baseball player hits a line drive. just before the ball is struck it is moving east at a speed of 39.6 ms 89 mih.
A block whose mass m is 680 kg is fastened to a spring whosespring constant k is 65 N/m. What is the maximum speed of the oscillating block
An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. find the bundle's initial vertical component of velocity
A person works in a room for 4 hours with an activity of 3000 Bq/cubic meter of strontium chloride suspended in the air. Estimate the CEDE using the DAC. Calculate the CDEs to red bone marrow and the bone surfaces.
The distance between the eyepiece and the objective lens in a certain compound microscope is 24.5 cm. compute the overall magnification of the microscope
A zoology graduate student is provided with a bow and an arrow tipped with a syring of sedative and assigned to measure the temperature of a black rhinoceros, How far away should the rhino be when the student releases the arrow
Suppose a large conducting slab is polarized (one side is positive and the other is negative) What is the electric field force (E) inside the slab
A 2cm tall object is placed 40cm from a lens. The resulting image is 8cm tall and upright relative to the object. Determine the focal length of the lens
A monochromatic source light source having a wavelength of 547 nm is used to check the calibration of a Michelson interferometer. how many fringes will move past this fixed point
A parallel-plate capacitor is made from two plates 12.5 cm on each side and 4.20 mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40.
Body A in the figure weighs 122 N, and body B weighs 33.5 N. The coefficients of friction between A and the incline are, What is the acceleration of A if A is initially at rest
a proton has an initial speed of 3.5 105 ms. a what potential difference is required to bring the proton to rest? b
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