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A camera has a lens (or combination of lenses) like the converging lens that focuses light from objects into real images ona piece of film. an enlarger shines light through a negative, anduses a lens to project a real image of the picture on the negativeon to the plat form where the photographic paper is placed. explain how each of the following will affect your photographs.
a) the negative is placed in the enlarger with half of it covered by a piece of tape on the inside.
b) half of the lens on the enlarger is covered by a piece of paper.
c) the camera lens is replaced by a diverging lens with the same focal length.
One average force F1 has a magnitude that is three times as large as that of another force F2. Both forces produce the similar impulse. The average force F1 acts for a time interval of 1.77ms. for what time interval does the average force F2 act.
A boy on board a cruise ship drops a 30.0 g marble into the ocean. If the resistive force proportionality constant is 0.500 kg/s, what is the terminal speed of the marble in m/s?
A motorcycle and 58.0 kg rider accelerate at 2.8 m/s2 up a ramp inclined 10° above the horizontal. What is the magnitude of the net force on the rider
In the equation, x is measured in meters and t in seconds. What is the maximum energy stored in the spring during an oscillation
In a certain RLC circuit, the RMS current is 6.42 A, the RMS voltage is 235 V, and the current leads the voltage by 55.6°. Calculate the average power dissipated in the circuit
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.360mm wide. What is the width of the first bright fringe on either side of the central one
A cart with mass 200gmoving on a frictionless linear air track at an initial speed of 1.1m/sundergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
a 200 loop square coil 0.8m to a side lies in the xy plane. The current in each loop of the coil is 8A clockwise. find the torque on the coil due to the magnetic field
A bicycle wheel is rotating at 40rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.45rad/s2, What is the wheel's angular velocity, in rpm, 10s later
A student drops a ball from the top of a tall building; the ball takes 3.1s to reach the ground. What is the height of the building
What properties of light might be involved in reflection, What changes occur in the properties of light such as wavelength, frequency, and amplitude during reflection
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
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