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The accereration due to gravity, near the surface of the Earth, in SI units is approximately 9.81 m/s^2. An object initially at a height of 100 m is released from rest at time t = 0 seconds. Neglect
The distance between the objective and eyepiece is 14.0 cm. If a blood cell subtends an angle of 2.1 multiplied by 10-5 rad when viewed with the naked eye at a near point of 27.0 cm, what angle (magn
A nonreflective coating (n = 1.42) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of yellow-green light (wavelength in vacuum = 564 nm), determine the m
A proton beam that carries a total current of 8.3 mA has 10.0 mm diameter. The current density in the proton beam increases linearly with distance from the center.
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.350
The average density of a fish can be found by first weighing it in air and then finding the scale reading for the fish completely immersed in water and suspended from a scale. If a fish has weight 2
If instead the second disk is set spinning at 780 rpm in the direction opposite the first disk's rotation, what is the angular speed after coupling?
What is the magnitude of its angular momentum relative to the point (-2.0,-2.0) m at this same moment?
A grade school student plans to build a 38-power telescope as a science fair project. She starts with a magnifying glass with a focal length of 5.5cm as the eyepiece. What focal length is needed for
What is the displacement current if the voltage is increased at a known rate? At what t will the leaking current equal the displacement current?
(a) If the block reaches the bottom of the slope at 12.0 m/s, what is the average frictional force between the block and the surface of the slope? (b) What is the kinetic cofficient of friction of t
A transparent film (n = 1.26) is deposited on a glass plate (n = 1.52) to form a nonreflecting coating. The film has a thickness of 1.05 x 10-7 m. What is the longest possible wavelength (in vacuum)
How much work is done to bring this wheel from rest to a speed of 120 rpm in a time interval of 34.2 s?
A magnifying glass creates a virtual image of the observed object. Explain how it is possible, that humans can see the virtual images. The virtual image created by the magnifying glass is one exampl
In order to improve sharpness of pictures, photographers sometimes decrease lens's aperture (i.e. cover part of the lens). Explain why this procedure leads to a sharper image.
The observer is positioned so that the far edge of the bottom of the empty glass is just visible. When the glass is filled to the top with ethyl alcohol, the center of the bottom of the glass is jus
Two Lens that are L=29 cm apart are used to form an image. Lens 1 is converging and has a focal length f1=12 cm; Lens 2 is diverging and has a focal length f2=-7.0 cm. a) Determine the distance from
How many 65-W lightbulbs can be connected in parallel across a potential difference of 95V before the total current in the circuit exceeds 2.2A?
At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 516.6 nm? At what angle will the second order peak occur?
A pirate sights a distant ship with a spyglass that gives an angular magnification of 24. If the focal length of the eyepiece is 14 , what is the focal length of the objective?
Suppose a small coil (808 turns, radius of 0.00847m and resistence 1.62 ohms) is placed at the center of the soleniod, it's axis paralell to the axis of the soleniod. Find the rms current induced in
At t = 0 s the leading edge of the loop hits the edge of the square region. Find the magnitude of the force you must apply to move the loop at constant speed:
How many complete revolutions does the wheel turn before coming to rest?
A current of 0.97A flows through a copper wire 0.44mm in diameter when it is connected to a potential difference of 15V. How long is the wire?
Assuming no transfer of heat to or from the surroundings, what is the final mass (in kg) of the water in the system?