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Two 1.70 centimeter diameter disks spaced 1.80 millimeter apart from a parallel-plate capacitor. The electric field between the disks is 4.70 × 105 V/m.
A) Determine the voltage across the capacitor?
B) An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.50 ×107 m/s. Find the electron speed as it left the negative plate?
The focal length of a magnifying glass is 4.5 cm. To magnify an object do you place it at 3.0 cm or at 5.0from the glass? If the near-point is 30 cm, find the magnification for the image at infinity
A 35 mm camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. What is the height of the flower%u2019s image on the film
The second hand of a large grandfather clock has length 20 cm, very small width and depth, and a mass of 100g. What is the second hand's kinetic energy
The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. Find the direction and magnitude of the magnetic force the field exerts on the proton
The speed of sound in air is 345 m/s. A tuning fork vibrates above the open end of a sound resonance tube. what is the frequency (in Hertz) of the tuning fork
A sound source emits sounds of frequency 215 Hz that travel through still air at 340 m/s. Find the frequency heard by the listener
Determine the minimum thickness of a soap film (n= 1.80) that will result in constructive interference of a specific red line with wavelength 610 nm
Jill of the jungle swings on a vine 6.5 m long. What is the tension in the vine if Jill, whose mass is 61kg, is moving at 2.4 m/s when the vine is vertical
A uniform, solid disk is acted on by a tangential force F, as shown. The disk is free to rotate about its central axis without friction. What is the net torque on the disk
A cube with side length 1.53m of solid Styrofoam is completely submerged in fresh water such that the top of the Styrofoam block, what is the buoyant force acting upon the Styrofoam block
A 2.0 centimeter tall object is placed in front of a mirror. A 1.0 tall upright image is formed behind the mirror, 180 from the object. Find what is the focal length of the mirror
If the percentage standard error in measuring voltages and currents is 2%, what is the percentage standard error in finding
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