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When a converging lens is utilized in a camera (as in the top figure), the film should be at a distance of 0.210 m from the lens to record an image of an object that is 4.00 m from the lens. The same lens and film are utilized in a projector (see the bottom figure), with the screen 3.800 m from the lens. How far from the projector lens must the film be placed?
Compute the magnitude of the torque on the tree due to the tension in the rope, with the base of the tree acting as the reference point
a all our household circuits are wired in parallel. below is an example of a simple household circuit with 3 identical
During an action potential, Na+ ions move into the cell at a rate of about 3×10^?7mol/m2?s. How much power must be produced by the "active Na+ pumping" system
a coil of radius 75 mm has 250 turns and carries a current of 2.2 a. find the magnetic field at the centre of the coil
The orbital speed of Earth about the Sun is 2.90×104 m/s and its distance from the Sun is 1.50×1011 m. find the magnitude of the force exerted by the Sun on Earth
consider the earth/atmosphere/ionosphere as an equivalent RC circuit with a total resistance of 230 ohm and a total capacitance of 2.9F. how long does this amount of discharge take in hours
three successive resonance frequencies in an organ pipe are 1310 1834 and 2358 hz. a is the pipe closed at one end or
A bullet of mass 11.4 g is fired into an initially stationary block and comes to rest in the block. Find the initial speed of the bullet
Electrons accelerated by a potential difference of 13.22 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. Calculate the wavelength of light emitted with the..
At a certain point in a pipeline the liquid speed is 8 m/s and the gauge pressure is 7x10^4 Pa. Find the gauge pressure at the second point at a level 10 meters lower than at the first if a cross-sectional area is 10cm squared at the first point a..
A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 60 degrees from the normal. what is the ray's angle from the normal
The second-order dark fringe in a single-slit diffraction pattern is 1.40 mm from the center of the central maximum. calculate the wavelength of the incident light
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