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A horizontal laser beam of wavelength 632.8 nm has a circular cross section 2.00 mm in diameter. A rectangular aperture is to be placed in the center of the beam so that the light falls perpendicularly on a wall 4.50 m away, the central maximum fills a rectangle 110 mm wide and 6 mm high. The dimensions are measured between the minima bracketing the central maximum. Find the rehired height and width of the aperture.
A 19.5 ?F capacitor is fully charged by connecting it to a 14.0 V battery. Calculate the charge stored on one of the capacitor plates
An object of mass M = 3.5 kg slides from rest a distance d = 6 m down a frictionless inclined plane where it encounters a spring. When the block just touches the spring, how much gravitational potential energy has it lost
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 length of a moving spaceship is 28.4 m according to an astronaut on the spaceship. what is the speed of the spaceship
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the amplitude of vibration
Moon effect. Some people believe that the Moon controls their activities. If the Moon moves from being directly on the opposite side of Earth from you to being directly overhead, by what percentage does (a) the Moon's gravitational pull on you increa..
The electron makes a transition from the 1 to 4 level by absorbing a photon. Calculate the wavelength of this photon
A proton is accelerated from rest by a potential difference of 335 V. The proton enters a uniform magnetic field and follows a circular path of radius 25 cm. Determine the magnitude of the magnetic field.
WPHY AM Radio transmits on a frequency of 970 kHz, omnidirectionally, with a power of 20 kW. What is WPHY's intensity where you live
Suppose a tank contains 770 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. What is the increase in the internal energy of the neon
if a particle undergoes simple harmonic motion (SHM) withamplitude 0.25m, what is the total distance it travels in one period
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
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