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A monochromatic beam of microwaves with a wavelength of 0.052 m is directed at a rectangular opening of width 0.35 m. The resulting diffraction pattern is measured along a wall 8.0 m from the opening. What is the distance between the first- and second-order dark fringes?
What is the frequency of the standing wave - how much of the boat is submerged when it carries three passengers
You wish to design a telescope using an objective lens with f(objecive) = 0.75 m. If you use an eyepiece with a magnification of 20, what is the length of the telescope
What is the strength of the central magnetic field? What current would have to flow through a single loop of wire of the same radius to produce the same magnetic field?
The drawing shows a laser beam shining on a plane mirror that isperpendicular to the floor. The beam's angle of incident is37.8°. The beam emerges from the laserat a point that is 1.10 m from the mirror and 1.80 m above the floor.
A 74 kg person is parachuting and experiencing a downward acceleration of 2.9 m/s2. The mass of the parachute is 5.8 kg. find the upward force on the open parachute from the air
A submarine is stranded on the bottom of the ocean with its hatch 38 m below the surface. Calculate the force needed to open the hatch from the inside
the electric potential at point b in the parallel plate capacitor is less than the electric potential at point a by
a satellite circles the earth in an orbit whose radius is 3.78 times the earths radius. the earths mass is 5.98 x 1024
A force of 300 pounds compresses a 10-inch string to a length of 4 inches. Calculate the work done in compressing the spring an additional 2 inches.
Starting from one oasis, a camel walks 50 km in a direction 30° south of west and then walks 30 km, What is the distance in km between the two oases
An object's temperature increases, and in so doing its radiation power increases by a factor of 2.00.find the ratio of the new temperature to the original temperature
an object is in front of a converging lens f 0.40 m. the magnification of the lens is m 2.1. relative to the lens
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