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You have a "real" camera, with an adjustable lens aperture and an adjustable shutter speed. If you rotate the ring on the lens to make the f-number of the lens larger what else do you affect, and how?
1. You will need to take a shorter exposure, and you will have a shallower depth of field around the object you are focusing on.
2. You will make the field of view larger, and the need exposure time will be unaffected.
3. You will need to make a longer exposure, and you will have a deeper depth of field around the object you are focusing on.
an object initially at rest moves a distance x when a force f is applied for time t. how far will the object move of a
How long will it take until the sun has used up all the hydrogen atoms in the core (the central 10%)? That is, what is the main-sequence lifetime of the sun and compare the lifetime of the sun to the current age.
A force acting on an object moving along the x axis is given by Fx = (14x ? 3.0x2) N, How much work is done by this force as the object moves from x = ?2.0 m to x = +1.0 m
A 494 g air-track glider attached to a spring with spring constant 7.5 N/m is sitting at rest on a frictionless air track. What is the period of the subsequent oscillations
At any point the magnetic field lines are in the direction of: As used in the laws of refraction and reflection, the "normal" direction i
The absorption spectrum of an atom consists of the wavelengths 200 nm, 300 nm, and 500 nm. What wavelengths are seen in the atom's emission spectrum?
A 2.4 kg iron ball is dropped from a height of 14 m onto a concrete roadway, What is the ball's increase in temperature
A classical particle of mass m moves in 1 dimension and is attached to an ideal spring of spring constant mw_0^2 . Ignore friction. Take the equilibrium position of the particle to be the origin of the particle’s position x.
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
Jeff of the Jungle swings on a 7.6- vine that initially makes an angle of 47 with the vertical. If Jeff starts at rest and has a mass of 88 , illustrate what is the tension in the vine at the lowest point of the swing?
A 60.0 kilogram lady stands at one end of a 120 kilogram raft that is 6.0 meter long. determine the distance between the raft and the pier
A capacitor is charged to a potential of 12.0V and is then connected to a voltmeter having an internal resistance of 3.10M(omega) . After a time of 4.10s the voltmeter reads 3.0V . What is the capacitance? What is the time constant of the circuit?
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